Continuity: In the scene where Zeke and Charlie are running back to the vortex, Charlie's goggles move from being on his left side to behind his neck to his right side. The goggles keep moving back and forth.

Continuity: The scene were Chester's clothes are stolen, and they first have the idea of using time travel to help him, the camera cuts to a crowd scene - there is a wanted poster for the snowsuit guys in the background. They have not appeared with the snowsuits yet.

Factual error: The first day of school is said to be on September 3, 2005. However, Sept. 3, 2005 was actually a Saturday.

Revealing: When the guys are heading to the vortex in the cart, you can see the tracks from the previous takes imprinted in the grass.

Continuity: When they stop the kid in the hall with the toilet seat cover in his pants, Virgil lifts the cover twice near the kid's face.

Continuity: When the guys jump for the first time, when they land, Zeke and Virgil switch places between shots.