Todd Phillips’ The Hangover (B+) is vulgar, audacious and altogether winning. Pairing Bradley Cooper, Ed Helms and Zach Galifianakis in a hybrid comedy/mystery, the film follows a gang of groomsmen who must piece together what happened the previous night in a debaucherous Vegas bachelor party where the groom mysteriously disappeared. The episodic antics and misadventures of the so-called “Wolfpack” keep upping the ante, and dark hilarity ensues. These hedonistic Hardy Boys are best when displaying their vulnerabilities, with escalating levels of haplessness. The humor and highjinks add up to a delightful entertainment.