Just when you were starting to sober up afterThe Hangover… along comesThe Hangover Part II--a deft dose of hair of the dog that will keep fans of the original screaming with laughter once again. Director Todd Phillips brings back his great cast--Bradley Cooper, Zach Galifianakis, Justin Bartha, and Ed Helms for another splendid exercise in debauchery--and its painful aftermath. And perhaps surprisingly,The Hangover Part IIkeeps the laugh levels high. While the element of surprise is not here in the sequel, writer Craig Mazin, Scot Armstrong, and Phillips have upped the shock factor, resulting in humor that's sometimes not exactly politically correct, but is fall-down funny anyway. InThe Hangover Part II, Stu (Helms) is marrying a Thai-American woman (Jamie Chung), and the entire wedding party is flying to Thailand for the ceremony. Quicker than you can say "bachelor brunch," the boys are off on some kind of mystery adventure that results in some pretty serious, and pretty hilarious repercussions. (There's an unfortunate tattoo incident, one not easily covered up; there's an unexplained monkey--in a Rolling Stones shirt--now added to the entourage; and one of the group is missing.) The setup is familiar, but the ensemble of actors is so confident, their chemistry so easy, that the viewer enjoys their long, strange trip with bust-out-loud laughs. And you can't ask for much more in a buddy comedy. --A.T. Hurley