When a famous pop psychologist comes to town, Malena coaxes a skeptical Mel into attending her couples seminar and the shrill shrink promptly causes a rift between the newlyweds by siding with Mel. Meanwhile, Bobby sees through tightwad Reggie's ""romantic"" dinners by candlelight -- which includes a shared shower for the two of them.

Malena and Mel kick Bobbi and Omar out of the house so they can have some intimate time together, but the result is disappointing for both. Sheri brings home a cute rabbit only to find that Dean is allergic to it.

When Mel and Malena's baby is picked to appear in a calendar, they argue about letting the child be photographed. Bobbi is evicted from her apartment after letting Omar have wild party there.

Malena and Mel will be visiting her mother in Minnesota for Evan's christening and Malena wants to look her best. After an unsuccessful battle with the bulge, Sheri and Bobbi step in with some tough love to help Malena get her figure back.

When Sheri's friend Tom comes for a visit, Sheri expects Dean to be very jealous, as usual. However, he trusts Sheri--until her complicated series of lies is exposed. Meanwhile, Mel and Dean plan to beat Tom in a poker game, but Bobbi and Malena end up being the big winners when they join the game.

Mel invites Malena to the Bears game to score some ""goodwill"" points, throwing Reggie for a loss when she actually agrees to go. Meanwhile, Sheri and Dean have a sexy tradition of their own, but this year they end up freezing in Mel and Malena's hot tub.

When Reggie demands the option to date other women, Bobbi teaches him a lesson. Dean's fib to a prospective employer creates problems.

Dean sets out to surprise Sheri with the birthday gift of her dreams, but he's flabbergasted when Malena reveals what Sheri really wants -- the fulfillment of a particular sexual fantasy. Meanwhile, Bobbi and Reggie shudder to think that their adorable adopted mutt, Chi-Chi/Thor, represents a degree of commitment.

When the couples get together on game night, a few ""skeletons"" pop out of Mel and Dean's respective closets: Malena is dismayed to find that Naomi Campbell is Mel's ex-girlfriend -- and the supermodel is back in town. Sheri is miffed to learn of Dean's secret 20-year collection of ""Playboy"" magazines. Meanwhile, Reggie aims to strike a balance between maintaining his macho facade and keeping Bobbi satisfied.

A brotherly tiff between Mel and Reggie threatens to ruin Malena's first Mother's Day dinner for her mother-in-law -- a feast for which the clueless cook has enlisted Reggie and Sheri's culinary skills. When the guys argue about ownership of a prized Reggie Jackson baseball, Reggie bails on the dinner, leaving Malena to fend for herself. Meanwhile, anxiety also consumes Bobby, who is convinced that Mrs. Ellis disapproves of her, and Dean's special Mother's Day gift goes up in ashes with Sheri's flaming dessert.

Dean and Sheri brace themselves for his caustic, overbearing mother's annual visit, and as an aggravator Mary Winston knows no peer, but Dean finally throws his mom for a loop when he unleashes his true feelings about her behavior -- and he sets their relationship on a smoother course. Meanwhile, Bobbi tells Malena about Reggie's sexy moves, and the secret gets back to him.

Exasperated by Mel's beat-up Porsche sports car, Malena urges him to buy a more family-oriented vehicle. Unfortunately, when Sheri meddles, the result is an impractical minivan that neither Mel nor Malena really wants. Sheri helps rectify the situation, and Mel ends up with his old Porsche again. Meanwhile, Reggie resents that Bobbi is distracted by her new business of selling gift baskets in addition to her teaching career. Hoping to overwhelm her and cause her to stop making the baskets, Reggie pretends to be a wealthy customer and makes a huge order. Eventually, a disappointed Bobbi learns the truth but admits that she is exhausted from the extra work.

When Mel feels like he is losing his identity because of his marriage, he and Malena act on volatile advice from the marriage veterans, Dean and Sheri. Meanwhile, Reggie panics when he realizes that his relationship with Bobbi has progressed to the stage at which she feels comfortable answering his telephone.

Dean's sexy former girlfriend wants to reunite. Bobbi has a secret admirer.

The women want more time with their preoccupied men.

A silly misunderstanding between Malena and Sheri escalates after Mel and Dean start exchanging insults while trying to get their wives to make up. Bobbie reluctantly makes a date with a bartender because she is afraid that another rejection will devastate him.

Sheri is shocked when her mom announces that she is getting a divorce for the third time. When Sheri and Dean attempt to help her get through this difficult time, they find out that Ronnie happens to be coping quite well, since she hooked up with Fred the butcher.

Sheri considers a reconciliation with Dean as he considers what to get her for her birthday. Meanwhile, conflict between her job as a mother and as a therapist may cause Maleena to lose a longtime client.

The fourth season concludes as Dean takes Malena and Mel to the hospital when the mother-to-be goes into labor. Once there, Malena tells her husband to keep his video camera rolling, no matter what happens. Meanwhile, Sheri arrives at the hospital and aggravates Dean.

Sheri is invited to a night of salsa dancing with her friends, but she doesn't know that their husbands have asked Dean to join them. Meanwhile, Reggie throws out his back during his honeymoon trip to Hawaii.

When Dean invites Mel to go away for a golfing weekend with him, Mel and Malena become anxious about surviving their first weekend apart since getting married. Sheri comforts Malena with an old-fashioned slumber party, while Dean and Mel have a bad time. Meanwhile, waiting for Reggie outside a ""men only"" barbershop, Bobbi gets mugged.

Malena is given the ""Shining Star"" award by an association of psychiatrists, but Mel is worried that she's so busy she's going to burn out.

Dean panics as he and Sheri prepare to renew marriage vows on their fifth anniversary, and he must pen promises as poetic as those he paid someone to write for the original ceremony. Panic grips Mel too, when he loses his wedding ring after telling Malena of his preference to go ringless. Meanwhile, Bobbi and Reggie seek a suitable mate for Thor/Chi-Chi, and a parade of canine hopefuls prance though the apartment.

Bobbie's reverse psychology seems to backfire when she encourages Reggie to accept an astonishing invitation to be a sperm donor for an anonymous female acquaintance. Also, Dean introduces Mel to the joys of bulk shopping with disastrous results, after Malena insists the household duties be split evenly.

Insecurity causes problems in all three couples' relationships: Malena resents Mel's wearing a sexy shirt given to him by a former girlfriend; Sheri thinks Dean prefers looking at stars through his telescope to making love with her; and Bobbi becomes furious after witnessing Reggie apparently giving jewelry to a beautiful woman.

Malena learns that Mel has prepared a prenuptial agreement. Meanwhile, Sheri serves as a wedding coordinator for Malena's assistant, Lana, who is marrying a truck driver.

Malena is rattled when a new psychiatrist conducting an annual evaluation has doubts about her performance because she believes Malena has a problem with rigidity. Meanwhile, Reggie becomes obsessed with Dean's motorcycle after Dean and Mel claim he's not very masculine because he's not good with tools.

Malena intends to upstage her old class nemesis at her 15-year high-school reunion; Mel meets Malena's old flame, now an astronaut on the cover of a cereal box.

Bobbi's long-lost mother Brenda returns and asks Reggie to help her reconcile with her daughter. Meanwhile, Sheri enters Dean in a contest to appear in an underwear ad and he makes the final round. But when the ad is published, Dean cringes when he sees he's exposed a lot more than he expected.

Reggie and Dean smell tokenism when Mel gets into a country club Dean's been trying to join for three years. Meanwhile, Bobbi badgers Reggie into buying her a wide-screen TV, and Sheri and Malena can't face each other after unexpectedly having to bare all together during a ritzy spa mud bath.

Malena must choose between her friend or family member when she learns Bobbi has a new beau behind Reggie's back: musician Jamal. Meanwhile, Sheri tapes over Dean's prized video of his favorite college football triumph and is forced to call his old friends, including Eric Dickerson, to get another copy before Dean finds out.

When baby-making efforts put Dean and Sheri's lovemaking on a strict schedule, a frustrated Dean withdraws from his wife, scaring Sheri into doubting the stability of their marriage. Meanwhile, Bobbi and Reggie impulsively decide to live together, leading Mel and Malena to give the couple some questionable advice.

Mel's boss invites himself to dinner -- and brings his mistress. Meanwhile, Eunetta paints a portrait of Reggie -- nude.

Mel feels left out and fears his marriage may have met its Waterloo when Malena's French club consumes more of her time. Meanwhile, Dean and Sheri clash over how to handle Amber's wild ways when Dean catches Amber having a beer-soaked party after ditching school.

Bobbi learns she's living with Malena's leftovers when Sheri spills the beans and reveals that Malena and Reggie once dated. We find out the truth of the matter in flashbacks.

When he tells off Malena's patient Dexter for calling her at home, Mel unwittingly gets Malena fired and himself hired as Dexter's new therapist. In other plotlines, Dean and Sheri unknowingly steal a gift meant for charity when they confiscate a recliner the Gerards left out on the curb; and Bobbi is upset when the groomer gives her dog a bad haircut.

Reggie feels crowded when he has to share the apartment with Bobbi's best friend Felice, who has always hated him; Sheri fears Dean has lost the will to work after he is laid off and takes his time finding another job.

When Dean's brother Andy claims he needs one of Dean's kidneys, Sheri smells a scam and tells Dean to refuse. Meanwhile, Malena is jealous when she learns Mel corresponds regularly with an old flame. When Mel refuses to understand her discomfort, Malena turns to Sheri's mom Ronnie for advice.

Malena and Sheri are upset because Mel's visiting friends Brian and Samantha Hunt are wild: Brian encourages Mel and Dean to stay out late partying, and Samantha mocks the women's staid lifestyle. Malena and Sheri try to be like Samantha and let their husbands do whatever they want, but the wives fail to make their men jealous by acting outrageously themselves. Finally, Malena tells Mel about her concerns. Unfortunately, Brian and Samantha buy a house across the street and plan to stay. Meanwhile, Reggie finds out that Bobbi secretly didn't give up her apartment when she moved in with him. He wants a total commitment, but she worries that she will be stranded like she was when her marriage ended. Reggie painfully agrees to get rid of his address book of women he has dated if Bobbi terminates her lease.

Dean unwittingly annoys Sheri by not paying close enough attention to her. Meanwhile, the wedding march might not be played after all when an argument between Reggie and Bobbi jeopardizes their nuptials. The off-again, on-again couple's trip down the aisle is put on hold after they each heed contradictory advice on how to celebrate the festive occasion. Malena persuades Bobbi to change the venue from the hotel reception room they had already booked to another building's terrace overlooking the city. Mel tells Reggie to scrap their original plans for a cash bar. The final clash comes when the bride and groom have a contentious war of words over their wedding song.

Mel is jealous of the attention that Malena is giving their son; Sheri is concerned about Dean's attractive co-worker; Bobbi receives divorce papers from Reggie and misinterprets advice from Omar.

Reggie learns that Bobbi still wants him when his phone's star-69 feature reveals that she tried to contact him. Meanwhile, Sheri and Dean discover the advantages of being expectant parents when Sheri dons a fake pregnancy tummy; and Malena fumes when she finds out that Mel never mailed the thank-you notes from their wedding.

Sheri's wayward teen-age sister Amber shows up and promptly steals Dean's company car. Meanwhile, things get heared as Bobbi prepares to begin her single life and Reggie tries to talk her out of moving.

Dean fears his wife and his ex-girlfriend will realize he was seeing both of them at the same time during his bachelor days. Meanwhile, Reggie tries to get Bobbi to rescind her celibacy rule by feigning a love for poetry, and Mel and Mr. Gerard declare war against the drivers who speed down their street.

Dean flips when Sheri decides to take up mountain climbing to sow her oats before becoming a mom, and Reggie regrets hiring Bobbi as a hostess for his club when her diva-like attitude starts riling his customers.

The Ellis marriage hits a rock when Malena's expert testimony for Mel erodes his case. Meanwhile, Bobbi clashes with the principal, Mr. Sato, when she wants her students to come in dressed as their heroes -- regardless of gender. He declares boys must choose male role models and girls must choose females.

Mel blames Malena for his parents' possible split because his mother followed Malena's advice to visit a therapist. Meanwhile, Sheri and Dean go for fertility tests, which have Dean spinning with anxiety over his virility.

Deborah breaks up Dean's guys-only weekend when her water breaks and the men must rush her to the hospital. But a blizzard forces them to take the train, where they become trapped during a power outage. Meanwhile, Malena, Bobbi and Sheri's girls-only weekend also disintegrates as they spar over who was invited.

Malena's stomach flu turns out to be something else entirely. Meanwhile, Bobbi and Reggie decide to do a little remodeling.

Newlyweds Mel and Malena Ellis cross the threshold of their new suburban love nest -- next door to their best friends, childhood sweethearts Dean and Sheri Winston -- and before the last box is unpacked, Malena confides news of her possible pregnancy to Sheri. While Malena ponders the perfect way to tell Mel, word spreads quickly, and he is the last to know. The whole notion of commitment and domesticity sends shivers down the spine of Mel's brother, Reggie, whose girlfriend, Bobbi, now holds the key to his apartment and his heart, but isn't so eager to settle down either.