My favourite was when Lee priest did that MuscleTech Ad.
Of course they didnt mention that it was lee priest.
Before pic: http://www.skippypodar.net/WebGaller...eoffseason.jpg
"WOW! Gee thanks muscletech. I was a fatty looser pork boy, now with this product look at me. Im a world class body builder. Your stuff is the bomb."
*May not actually be what he said*