Dietary supplements

It goes without saying that a good diet is key to good health. As a fan of fitness and dieting, I'm always interested in reading about how professionals train and what diet supplements they take post workouts and, for triathletes, what they ingest during races. So in addition to a well balanced diet, I was wondering what dietary supplements you guys take (if any). When I was marathon training, I drank undiluted Gatorade during runs with Gu every 4 miles and drank Muscle Milk for post-workout recovery. Other people preferred drinking Accelerade, eating Powerbars or Sports Beans, etc. but they didn't seem to do it for me. Because I sweat a lot I also found out that I needed to take in a lot of salt to prevent dehydration. (Dehydration, by the way, sucks big time!) Even though I've long put off running because of bum knees, I find that Muscle Milk still works well for post workout swims and weight training. It helps to reduce muscle fatigue - if I don't drink it I will be sore. We all have our own preferences, so I hope this doesn't turn into a flame thread. It's just interesting to hear what you guys are using for diet supplements.