The Motivator

Who's that guy that you hear yelling whenever an American is about to start a downhill ski event in the Olympics? I guess his job is to pump the skiiers up, but D and I always start cracking up. He has a really gruff voice and yells things like "Kill it!" or "Come on [fill in the skiier's last name]...hammer it!" He does a good job of mixing it up. Maybe he has a notebook to keep track of new phrases to use. I want to see what he looks like, but they never show him.