Can anyone reccommend a sports/fitness/running type book on nutrition?

I am very healthy, but I know my diet isn't very good. So, I am reading some stuff on the "new food pyramid" in a newsweek from like a month ago, and I decided that I need to try and do something about this.

I won't be 32 and have the ability to burn up foods like a nuclear reactor forever.

Any reccommendations??? :shrug: