I saw this story while browsing the National Geographic Adventure site earlier. It's a short, but informative, article on how carbs impact your workouts, and how many carbs you should be taking in in order to efficiently workout and stay healthy.
I never got into the whole "carb craze" from a few years, back, but I had some friends who did, and lost quite a bit of weight, only to gain it all back when they had some carbs again. I workout enough, running and riding my bike in particular, that I need the carbs. I also think that any diet that cuts out everything from a food group is probably not a very good diet. So, I was happy to see that trend fade.