Happy Birthday Bradley Cooper, Robert Duvall, Oscar Isaac, and Marilyn Manson [PICS]

In regards to celebrity birthdays, January 05 is a real busy day. With actorsBradley Cooper,Robert Duvall,Oscar Isaac, andMarilyn Mansonall celebrating their big day, lets take time to celebrate their nude contributions to the world of film and television. If you want to see a lot of rump and beefcake, hit the jump to see these fine fellows in action!

Bradley Cooper took Hollywood by storm with his likeable role as Phil Wenneck in the blockbuster hit The Hangover (2009), but he was on Mr. Mans radar, thanks to his butt-flaunting moment in the drama Bending All The Rules (2002). Who cares about the rules. We just want to break that ass in!

Legendary actor Robert Duvall has been surprisingly modest during his acting career. Hes only had a few nude flashes, most notably in the sci-fi flicks THX 1138 (1971)and Phenomenon (1996). Wish Bobby wouldve done more science fiction films. Seems like they brought out the best in him!

Guatemalan actor Oscar Isaac has been stingy with his nude roles in his brief yet budding career. He teased the slightest bit of bunnage during a steamy sex scene in the period crime thrillerIn Secret (2013).Its no secret that we want to see Oscar in the buff!

Now that Marilyn Mansons musical career has slowed to a crawl, the one-time shock rocker has been exploring the world of acting. On a fairly recent episode of the hit boob tube series Sons of Anarchy (2008), Manson showed his buns of anarchy while plowing his cellmate from behind. We get the feeling that this isnt the last well be seeing of Mansons ass!