Floyd refuses to believe T.J. drank beer at a party with his pals.

Floyd, T.J. and Marcus build Yvette her own private bathroom, but she is less than thrilled. Meanwhile, T.J. and Mo must work out a family budget for their Life Science class.

TJ becomes the new assistant to Coach Gerber when the math teacher finally quits. Meanwhile Yvette meets a guy named Calvin who she finds attractive who turns out to be in middle school.

Two twin sisters move to the school. Marcus gets a date with the pretty cheerleader, but unknowingly mistakes her for her smart twin later. As he realizes how much he likes them both, Marcus sets up a plan to date them both. The cheerleader will date Marcus, while the intelligent one will date ... Marquis.

T.J. ghostwrites love letters for Marcus to Nina, the new girl in their literature class - and winds up having to ghostwrite love letters for Nina to Marcus, and vice versa.

When the star player of the basketball team is in danger of flunking history and being off the team, it's up to T.J. to tutor him before the big game.

T.J. falls for a girl at the arcade but falls short in the style department, so he tries a new look -- one his dad does not approve.

T.J. decides he wants to be a reporter, but since answering to Yvette as the editor of the school paper is more than he can take, he starts his own rival publication.

When Mo and T.J. are teamed up by their biology teacher to observe animal behavior, T.J. decides they'll watch his brother Marcus and sister Yvette.

T.J. tries to run for student-council president, but decides Marcus would be a better choice -- and someone he could control behind the scenes.

T.J. thinks his dad's business would benefit from a TV commercial, but when the station airs it at 3:00am, T.J. sneaks in and repositions it - during the Super Bowl.

TJ's skill in chess gives him the chance to play against a computer, Socrates, that's supposed to be unbeatable in chess. Marcus plans to win big on money bets.

T.J. earns a spot on the game show Knowledge College in the hope that his winnings will help defray household expenses, but the pressure may be too much.

Mo gets the shock of his life when his parents tell him he's adopted, so he immediately enlists T.J. in his search for his birth parents.

When Mo's parents leave for a second honeymoon, he stays with the Hendersons, but it drives a wedge between T.J. and Marcus. Meanwhile, Floyd objects to Yvette dating a college guy.

New romances are on the horizon for both Marcus and Mo in this episode. Marcus finds himself interested in Stacey, the new drummer for their band, while Mo's intended girlfriend rubs the other musicians the wrong way. Marcus is the one to suffer heartbreak first, leaving T.J. to try to pull him out of the doldrums.

T.J. lands a gig as a dancer in a music video by Destiny's Child and gets an offer to tour with them for a year, but his dad isn't so sure about the idea.

Marcus and his girlfriend Dana break up, prompting her to ask Mo to intervene. Meanwhile, T.J. faces gym class - and the locker room - for the first time.

Yvette has a recurring dream in which she marries Mo. Meanwhile, Marcus dreams up a scheme to make money to buy a new sound system.

T.J.'s call to a political talk show prompts an invitation to appear as a guest -- and to replace one of the regular panelists permanently.

Computer snooping helps Marcus woo T.J.'s study partner.

T.J., Marcus and Mo decide to do a music video for their video-production class, with T.J. directing. Meanwhile, Yvette falls for a hunky swimmer who's a little shallow.

Marcus scores a date with the girls' volleyball team champ, but plays second string socially. Meanwhile, T.J. tries to boost Mo's brainpower.

Tales of Floyd's Uncle Mert, a 1960s activist, inspire T.J. to protest a change in the school's lunch policy.

Floyd starts having doubts when T.J. bonds with a new astronomy teacher, making him question his importance in T.J.'s life. Meanwhile, Marcus and Mo find another student exploiting their personal style by photographing them for a fashion magazine against their wishes.

When the basketball coach quits his job in the middle of a game, the team must come up with another coach or forfeit - so T.J. is elected.

T.J. is forced to take wood shop and finds out it's not as easy as he thought. Meanwhile, sparks fly between Yvette and a photographer.

T.J.'s IQ takes a dive after he's accidentally hit on the head by a wood plank, allowing him to act more his age.

After attending a dance class with Yvette, T.J. decides his life's ambition is to become a tap dancer, but he finds out it's no cakewalk.

T.J. qualifies as an intern at the Primate Intelligence Research Project. Meanwhile, Marcus and Mo try to get rich selling "nutritional, energy supplement" candy bars.