21 Jump Street (2012)

Continuity mistake: When Jenko and Schmidt are throwing the house party, Jenko invited the 3 nerds to help him hack Erik's phone. When Jenko lets them in, only two guys walk in, then he shuts the door. In the next shot, all 3 guys are inside.

Continuity mistake: After the fight scene Jonah Hill says ”hey when did I get stabbed?” and it shows his side view with a horn object in his back. But in the earlier shot when he broke the vase on the head of the kid who he was fighting, everyones cheers and the camera shows his side view and there is no horn in his back.

Continuity mistake: When Schmidt and Jenko first visit 21 Jump Street and are standing outside, the doors are covered with newspapers. In the next shot when they open the doors from the inside there are no newspapers on the doors. (00:11:35)

Trivia: Before the One Percenter leader crashes his motor cycle into the chicken truck during the car chase sequence, the Wilhelm scream can be heard.

Schmidt: When did I get stabbed? That's AWESOME!

Domingo: You guys even real cops? You look like kids in Halloween
Jenko: Hey! You want me to beat your dick off?
Domingo: You want to beat my dick off?
Schmidt: I think what he was trying to say was, he's gonna punch you so many times round the genital area that your dick's just gonna fall off.

Captain Dickson: You are here because you some Justin Beaver, Molly Cyrus lookin' motherfuckers. You will be going in as undercover high school students.