Lights. Camera. Aggravation.Showtime is fun time, an action/comedy tale of mismatched LAPD partners (Robert De Niro and Eddie Murphy) directed by Tom Dey (Shanghai Noon). De Niro, wearing a slow-burn scowl like a badge, plays Mitch, a cop's cop forced by his superiors to be the focus of a reality TV series. Murphy plays Trey, a camera-ready officer more eager to hit his mark than hit the streets. Backed by a ratings-obsessed producer (Rene Russo) and coached in the finer points of copdom by a veteran star (William Shatner, spoofing his T.J. Hooker), Mitch and Trey become America's favorite buddy cops. But reel life soon gives way to the real. A brutal crimelord must be stopped - and that's where the shrapnel hits the fan.