David Zabriskie is one of the two or three best time-trialers amongst US pro riders, and one of the ten best in the world. He has won the US National TT Championships several times, and has both won TT stages and worn the yellow jersey at the Tour de Fucking Frogs, er, the Tour de France.
He also, obviously, is a very funny guy. Wish I’d been clever enough to trademark the phrase “Protect Your Junk” for my company.
Particularly hilarious is Zabriskie’s off-the-cuff, impromptu commercial with special guests Lance Armstrong and Levi Leipheimer. Available here: link