As a TV show, Reno 911! is diverting and amusing; as a motion picture, it's overlong and wears out its welcome. The film offers some solid laughs, but not enough to justify sitting through 80 minutes of the faux cops' antics.
Most of the humor is just casual references to outrageous behavior, awkward sexual feelings among the cast, preening self-regard, utter cluelessness, and insecure anxiety of its characters, and slapstick.
The actors behind this show are far more talented than this movie suggests -- many of their funniest quirks haven't made the final cut -- and there's no excuse beyond simple quick-buck greed for such a sloppy effort.