Hugh Hefner had an 80th Birthday party recently, and Playboy.com has been kind enough to compile a video of some of the celebs in attendance giving the sexy old man some B-Day shout-outs. Three 6 Mafia was there, as was Jenna Jameson (looking a lot llike Jessica Simpson), and Paris Hilton doing the most awkward and unsexy imitation of Marilyn Monroe I could have ever imagined in my life. Thank the Gods of tastelessness for this one.