A selling point of "Our Idiot Brother" that I didn't know about? Paul Rudd, who plays the titular idiot brother, apparently gets naked in the flick. Come to think of it—he's shown off the bod in a few movies. Apparently, Paul has noticed that he gravitates toward onscreen nudity, too. "I have been naked in a lot of my movies. There's something inherently funny about the naked male body, particularly mine. Ryan Reynolds, sure, it makes sense why he'd strip down. But not me. I shouldn't be allowed to," he joked to Playboy. "I'm a big fan of movie nudity. A male ass shot is the cheapest and best laugh ever. But it's mortifying to do. When I showed my butt in 'The 40-Year-Old Virgin,' all I could think was, This is going to be up on all those big screens. I was very self-conscious about doing it. But I also have a desperate and deep-seated need to be accepted and liked to make up for my massive insecurities." Man, is he funny. [Huffington Post] Lately, I've noticed a lot of famous dudes talking about their nude scenes. After the jump, your favorite males stars on taking it all off for their art.