David Starky (Ben Stiller) and Ren Hutch (Owen Wilson) become police partners in Base City. They find a dead body in the water and trace it to Reece Felman Industries headed by Reece (Vinc Vaughn). They begin interviewing cheerleaders, Huggy Bear, and convicts. Eventually the end up with a bag of cocaine. The police scan it and find out its artificial sweetener. Starsky and Hutch are fired from the case but interview other cheerleaders. Starsky has some of the sweetener and takes them to a disco where he goes crazy and threatens the DJ. Hutch stops him and they find out it wasn't sweetener. WHen they leave a Korean hitman takes shots at Starsky. They trace him and question him. They find out that Reece hired him so the crash his daughters Bar Mitzfah but find out he didn't have any drugs. They are suspended but stay on the case.
Chosen answer: It's from Adam Sandler's film - The Wedding Singer.