I saw an amateur stage production of Noises Off which was one of the funniest things I've ever seen. The film, despite noble efforts by Burnett, Caine and Elliott, fell short. John Ritter did not belong, and the comic timing, camera work, and editing were lackadaisical. Yes, it is funny, but could stand to be redone by a more comedy-oriented director.
Review of Noises Off...
