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.
Raging Bull - S1-E6
Continuity mistake: When Phil has Myron pushed against the lockers and the sunglasses are on, one scene shows that they are not on his ear. In the next scene when they show Myron the sunglasses are placed perfectly on his ear.
Continuity mistake: When Marla pours the smoothie down Phil's top, she pulls it open and tips it to the bottom, presumably landing in his lap, and there's no smoothie on the chest of his sweater, but later when he's walking with Keely, the stain is on his chest.
Future Jock - S1-E10
Continuity mistake: During lunch when they are sitting at the picnic tables, Troy hands Keely a medal that is blue, and when she puts it around her neck it is yellow.
Continuity mistake: When Phil's dad makes Phil's toe, he only makes one, but when Phil in in the tomato thing, you see he has 2 new ones.