May 20, 2009 1:06 pm “The Hangover” Stars Talk Male Nudity Ed Helms, Bradley Cooper and Zach Galifianakis talk about their new Las Vegas bachelor party comedy, “The Hangover,” male nudity in the flick, and the craziest bachelor parties they’ve ever attended. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug 2:28 King Charles returns to public duties amid cancer diagnosis