Visible crew/equipment: When Calvin is getting pulled up the hill by his dog. He is still on his skateboard and going up a grass hill. You can totally tell he is riding on much bigger wheels than he was before. Therefore the wheels need to be bigger so they can go up the hill.

Revealing: In the scene where they are playing N64 look at the system there is no game in it.

Continuity: In the scene when Calvin is doing his skate trick in the dog show, when he goes on a ramp, it breaks and he flies his arms and legs are moving between shots.