Jill takes Tim, Wilson, Al, and Heidi on a surprise river rafting trip.

Randy is unexpectedly accepted into a year long environmental program.

Tim's brother and Jill's sister announce that they are an item.

Brad tries to convince his parents that they should let him go to Europe.

Al's new rich girlfriend keeps buying him extravagant gifts.

At a Halloween party Tim encourages Wilson to break up with his girlfriend.

Tim overhears Jill saying that one of her patients is having an affair.

Tim's first car is destoyed before his eyes in a junkyard.

Mark tries to get the affection of the most beautiful girl in his class.

Tim invites his brother Marty and his twins to live with him.

Randy returns from Costa Rica for Christmas.

Tim and Jill try to teach Marty the best way to parent.

Brad finally gets his first car.

Tim gets preoccupied when he is left alone to write his book.

Brad blames Tim for possibly ruining his soccer career.

Tim offers his budding filmmaker son Mark the chance to shoot a tribute.

Jill is angry when Tim spends too much time with his new female mechanic.

Jill needs an emergency hysterectomy.

Jill's mother comes to visit to help with her daughter's care.

Tim and Wilson's friendship is tested when Wilson wins $10,000.

Harry announces that he is retiring and selling the hardware store.

Jill prepares to defend her master's thesis.

Brad receives a letter from UCLA saying he's still a candidate.

Al take his mother out to dinner to tell her he's going to get married.