We watched "Return of the Killer Tomatoes" this morning, and it's one of those movies that actually succeeds with 4th Wall breaking jokes, largely because George Clooney is an actor who is charismatic enough that he can look at the camera and you believe what he has to say. The movie is SO silly and SO cheap that it all works. Very few comedies of that type succeed.
When I read in a magazine that there was a rap song out there that featured the lines, "It's getting hot in here / so take off all your clothes" I thought that they were kidding.