Shunted to the L.A. streets by systemic overcrowding, a childlike mental patient (Charlie Day, who wrote and directed) gets corralled by a movie producer (Ray Liotta) who realizes he's a dead ringer for his temperamental and stalling leading man (Day, again). Launched into fame and exploited by an eager agent (Ken Jeong), the hapless new media sensation will find a price tag for his celebrity. Wistful inside farce co-stars Kate Beckinsale, Adrien Brody, Common, Jason Sudeikis, Edie Falco. 97 min. Widescreen; Soundtrack English.