The Diffy's discover Curtis the Caveman stowed away in the time machine and now it's up to Lloyd to decide if they should keep him. Pim goes to Debbie's sleepover and tries to find a way out.
Guest Stars:
Kay Panabaker
Phil skips Unification Day to go to a party that he can't even get in to. Pim cheats on a cooking assignent, so she has to bake something homemade.
Guest Stars:
Evan Peters, Brenda Song, Kay Panabaker, Shedrack Anderson III
Phil tries to find out if Keely's crush is cheating on her by using his "insta morph" to make himself look like Tanner.
Guest Stars:
Brenda Song, Kay Panabaker, Chris Hunter, Rory Thost, Ted Davis
Lloyd and Barbara decide to go on a weekend road trip for their anniversery. They leave Phil in charge of Pim and if everything goes right then Phil will get an afterburner for his skyak. Once Pim hears this she is not happy and tries everything in her power to make the weekend go bad so Phil won't get the afterburner.
Guest Stars:
J. P. Manoux, Larry Udy, David Glowacki, James Leo Johnson
Phil's poor penmanship lands him back in Miss Winston's second grade class. Tanner shows him up in front of the whole school, but Phil learns to laugh at himself.
Guest Stars:
Kay Panabaker, Chris Hunter, J. P. Manoux, E.E. Bell, Suzanne Krull
Phil gets detention and goes to the dance with his new "guy friends." But when a bull attacks his new friend, he morphs it into a cat. Pim is tardy too many times, so she dresses Curtis up as her father to get off being punished.
Guest Stars:
Jeff D'Agostino, Brenda Song, Suzanne Krull, Kelli McCarty
Phil helps Keely with her stage fright so Phil shrinks himself and sits on her microphone during her performance; Pim and Bradley become co-parents of a bag of flour as part of a class assignment on raising a baby.
Guest Stars:
Rory Thost, Stephanie Sawyer
Phil and Pim worry that Lloyd will embarrass them when he plans to play American folk music at their school concert; Barbara takes Curtis to a dentist when he gets a toothache.
Guest Stars:
Kay Panabaker
Phil tries to dissuade another girl's affections; Pim joins the orchestra to sabotage Debbie's solo; Pim meets Bradley Benjamin Farmer.
Guest Stars:
Evan Peters, Brenda Song, Rory Thost, AJ Michalka, Kay Panabaker
Pim and Phil start school in 2004. Phil meets Keely and offers to tutor her in Algebra. Pim tries to get through her first day of school. This is the pilot episode of the series. This episode, "Future Jock" and "You Say Toe-Mato" aired as a three-episode event on August 13, 2004
Guest Stars:
Evan Peters, Brenda Song, Kay Panabaker
Phil uses a futuristic gadget to compete in the gymnastics tournament.
Guest Stars:
Cody Kasch, Eric Allan Kramer
Phil and Keely go to the Tomato Ranch. But Phil is worried about going in the tomato mashing tub as he only has 4 toes.
Guest Stars:
Gus Hoffman, Kay Panabaker
Phil and Keely start a day-care service for dogs to earn money for concert tickets. Phil uses a futuristic gadget to understand what a dog is saying.
Guest Stars:
Brenda Song, Kay Panabaker, Rodney Dangerfield
A school video project causes Phil to overlook his friends' feelings; Pim is recruited for a track meet.
Guest Stars:
Evan Peters, Brenda Song, Kay Panabaker, E.E. Bell
Debbie enlists everyone is school to help her bake cupcakes except Pim. But soon enough Pim is forced into giving the drum beat to the bakers. Phil and Keely try to help the helpless bakers.
Guest Stars:
Kay Panabaker
Keely uses the "New-Ager" and pretends to be a substitute teacher, but she then gains the attraction of Mr. Hackett.
Guest Stars:
Brittney Powell, Rory Thost, Ronnie Schell, Kirsten Vangsness
Phil tries to impress the mayor's daughter but things get bad when he switches places with Curtis. Pim realizes that she can't stand Debbie and doesn't even want to be her friend.
Guest Stars:
Alice Greczyn, Kay Panabaker, Terry Rhoads
Phil defends Pim against a bully and then he gets bullied. Curtis takes the neighbor's lawn ornaments and calls them his "friends."
Guest Stars:
Yeardley Smith, Jeff D'Agostino
Phil and Keely enter a science fair featuring next Century's "milk engine" sending Lloyd into a state of panic that the Diffys will be discovered. Phil and Keely sneak into the fair to retrieve the evidence so the Diffys can remain in Pickford.
Guest Stars:
Brenda Song, Suzanne Krull, Marshall Allman, E.J. Callahan
Phil and Keely pretend to be in cheerleading to impress Mrs. Teslow. Pim tries to find the one thing that Debbie can't stand.
Guest Stars:
Yeardley Smith, Evan Peters, Brenda Song, Kay Panabaker