Continuity mistake: In the episode "Team Diffy," Lloyd tells Andy that he noticed Andy had The Time Flyer 3000. But when Keely, Phil, and Andy are outside talking about if Phil would do Andy's prank, Andy says he is going to fire up The Time Flyer 2000, which is not the same one Lloyd noticed.
Continuity mistake: In the pilot episode, Keely is just becoming friends with Pim because she needs tutoring in algebra. In one of the final scenes, Pim comes up to Phil during lunch and says their dad called, so it's time for them to go home. When you first see Pim her necklace is undone, then when they are getting up to leave Pim's necklace is clasped.