Continuity: In the scene right after Evan visits Lenny for the first time after 7 years, he is laying on his dorm bed, flipping through his old notebooks. The scene starts out with him biting the nails on his right hand, but in the next shot when the notebook starts shaking, both hands are visibly holding the notebook.

Audio problem: When Kayleigh, Tommy, Evan and Lenny are putting the block buster in the mailbox, Evan puts the cigarette on the block buster and says it should last Lenny 2 minutes, but his mouth says 10 minutes.

Continuity: In the scene where Evan takes Kayleigh (who is now a drugged up hooker) to a diner, there is a plate with a piece of pie, a wallet and a red cigarette lighter on the table in front of Kayleigh. Each time the camera turns to Evan and then back to Kayleigh, the lighter is in a different location. This happens several times.

Visible crew/equipment: In the end scene when Evan is walking down a busy Manhattan street, talking on the cellphone, you can see the red camera truck's reflection in a window on the other side of the sidewalk.

Revealing: In the first scene of the film, Evan is writing frantically in a journal and his last words that the camera zooms in on are "Save her". Look closely and you can see that those same words are already indented on the page as indicated by a visible letter "s" and "h" and a period that had already been written on the pad of paper. Obviously they had done some other takes.

Continuity: When Evan has a nosebleed after finding out that he has no hands, there is blood on his neck that disappears and reappears between shots.

Continuity: Young Evan puts the cigarette on the fuse of the blockbuster and as Lenny walks away the butt is shorter than when Lenny stands up near the mailbox after tying his shoe lace.