"Why don't you reverse the rotation of the Earth, go back in time and read the directions?" Jerry Seinfeld, Superman and a stolen DVD player. Yeah, it's part of an American Express promotion, but it's cleverly done.
Ted L. Nancy (or is it really Jerry Seinfeld?) has a lock on the "send a seemingly serious letter to someone and see if they write back" genre, but this ploy to get unwitting United States Senators to send in their favorite jokes is amusing too. Even Santorum chimed in.