Short and funny, this film about filmmaking has a great performance by Le Gros as an obnoxious actor and by Buscemi as a director on the edge of losing it in the midst of food poisoning, fire, and a host of other problems. But--and here is the film's secret--much of it is in the anxious dreams of the participants. The line between reality and cinema is hard to find--but wait--this is a film itself! Well-written and directed by DeCillo. Mulroney, Keener, Von Zerneck, Dinklage, and the rest of the cast are also just about perfect. ( )