!! OMG, his butt: Jason Beghe !!
In 1988, actor Jason Beghe starred in "Monkey Shines," a movie about a quadriplegic man whose assistance-trained monkey begins to develop feelings of rage. But what was really raging back then was Beghe's body, which you can see in NSFW butt shots after the jump. Oh, and there's a harness involved... in case you're into that sort of thing.