'This Is the End' review: Both an homage and send-up of stoner action comedies

The apocalyptic satire "This Is the End" was made for admirers of Seth Rogen and James Franco, who, the movie suggests, may be their own biggest fans. An alternately sly and wildly indulgent exercise in omni-referential humor, "This Is the End" is accidently true to its title: As both homage and send-up, it presents viewers with the ultra-meta image of a comedy genre eating its own tail.