21 Jump Street. Jonah Hill and Channing Tatum are hilarious in this film. You have to see Hill as Peter Pan in the high school musical or the car chase where he's dressed as Peter Pan. And one of the biggest treats of the film is when the two undercover cops are forced to take a new synthetic drug to protect their cover and the drug kicks in just as the high school coach (Rob Riggle) stops them for lack of hall passes. In the screen snap above, they are in "Phase 02: TRIPPING MAJOR BALLSACK" of the drug and they see Riggle's head as a giant ice cream cone.
Other hilarious moments include Tatum trying to bluff his way through the Miranda rights with the police captain played by Nick Offerman, "Did you just say you have the right to be an attorney?"