I don't know if any of you have seen these episodes, but they're very informative and a great kick in the behind when I feel like I'm slacking on the eating habits. Each show is about 50 minutes, so you'll want to watch when you've got some extra time.
http://twit.tv/show/twit-live-specials/124
http://twit.tv/show/twit-live-specials/125