As Allie moves into her new high-rise condo, Kate interviews a potential housemate.

As the nervous bride-to-be, Allie has nightmares about meeting her fiancé's parents.

Everyone has date problems: Emma has no date for the college dance and must go with Jennie and Jason & Jennie breaks up with Jason & Chip has a fight with Amy upstairs because she was drooling over Matt Dillon in the movie they rent ed & Kate's chiropractor date was a self-centered bore; and Allie has no date at all. But Emma meets someone at the dance: a self-satisfied, arrogrant business major whom everyone else hates on sight.

An adult Chip brings his son Scotty to the old apartment just before the building is demolished, and reminisces a bout the day he tried to conceal a report card showing that he had failed science -- convincing him that he would always be a failure.

The kids plan a Hallowe'en haunting -- and so do their mothers.

Kate and Allie invite a crowd for Thanksgiving dinner/disaster.

Allie's advertisement for part-time work ends up in the Personals Column by mistake, and the return mail brings such bizarre responses that she is appalled.

Ted proposes to Kate.

Jenny falls into bad company but finds herself all alone at the police station.

Kate brings a stray kitten home.

Guess who's coming to dinner? Kate's potential step-mom. But when Kate takes an instant dislike to her father's fiancée, he calls the engagement off.

Despite Kate's doubts about working with her friend, Allie gets a job at Sloan Travel and quickly fouls up so completely that she is fired—whereupon Kate threatens to quit.

Dateless, Kate and Allie spend New Year's Eve at home together.

Allie finally has someone who wants to buy her house... but, is she willing to sell?

Kate's elderly aunt Ofelia dies, leaving behind a cryptic will

Allie offers to be a campaign volunteer to a would-be congressman

After finding a 55-year-old love letter hidden in the wall, Kate and Allie try to rekindle the romance by mailing the letter.

Chip's birthday causes problems when Charles goes overboard on presents.

Kate and Allie's crush on an old college professor is rekindled when each imagines she is the inspiration for his recently published romantic novel.

Invited to their 20th high school reunion, Kate & Allie both go determined to settle old scores.

On a free trip to Paris, Allie comes down with the flu while Jennie plans a rendezvous with a Frenchman.

Allie is so afraid of appearing on a talk show about modern families that she follows Kate's advice and goes to a hypnotist.

Chip befriends a mentally handicapped man who's homeless and invites him to sleep in the basement.

Kate and Allie find a wallet containing $5,000 in cash, and the grateful owner gives them a $500 reward -- so Kate challenges Allie to spend her half on something frivolous she will enjoy.

Bob is in a panic because he feels he's not ready for marriage---which no one has mentioned.

The series' 100th episode is celebrated with clips from past shows.

Kate is saved from perky Haven and Blair when Allie suggests that Kate move in.

Allie's reaction upon hearing that Jennie and her boyfriend are sharing a dorm room doesn't compare with her reaction when they announce they're getting married.