When putting together your urban cop movie, the Grizzled Captain who’s "seen it all" is an absolute essential. When your urban cop movie is the hilarious new take on the iconic '80s TV series 21 Jump Street, you need a captain who can both intimidate his subordinates and crack up an audience. Enter Ice Cube as Captain Dickson, a fro’d out, goatee-sporting menace, whose job it is to teach underachievers Channing Tatum and Jonah Hill a thing or two about undercover police work. If these two are going to bust a high school drug ring, they will need all the help—and berating—that Captain Dickson can offer. Check the YouTube clip above for a few choice lessons in crime fighting.