Continuity mistake: When Josh throws the piece of fruit (or whatever it was) to break the lamp, Audrey checks out the lamp stand. In the shot where Walter first arrives and she's checking it out, it's all in one piece. But in another shot, it's suddenly all broken and a big piece is missing.
Continuity mistake: In the scene where Josh tries to prove Susan is cheating on Drake with him, after Drake comes out of the closet the camera is facing him and the right side of Josh's shirt is on his right shoulder. In the next shot, it's hanging off his shoulder. When the camera faces Drake again, the shirt is back on Josh's shoulder. In the final shot, the camera is facing Josh and the shirt is hanging off of his shoulder again and he fixes it.
Continuity mistake: During the scene in the science classroom, the teacher draws a circle on the chalkboard and refers to it as a picture of the human eye. In following shots, this picture constantly changes from having other parts like irises and pupils to just being a blank circle.
Continuity mistake: In "Football", when Josh is trying to act cool near the beginning, it does a shot of the wall he is going to lean against, and there is a small shot of the bottom of the "WET PAINT" sign, and it is pink. Then, when the camera looks full-on at the sign, it is black and white.
Continuity mistake: After Zeek gets injured and Josh decides to play himself, when he runs out screaming and comes back in, you can see a poster in the hallway but the words aren't clear so its hard to see. When the game is over after he scored the touchdown there is a totally different poster in the hallway.