!! OMG, how well-executed: The Simpsons XXX !!
There have been a variety of adult movies parodying The Simpsons, but the newest one from director Lee Roy Myers really nails the characterizations, and especially the voices! That woman playing Marge should win an Oscar, or an AVN, or whatever straight adult film stars win.
Check out the mostly SFW trailer after the jump!
Check out the really NSFW stills over at Fleshbot.