On Saturday I had a great time teaching a workshop at Wu Dao Kung Fu on fueling for exercise and everyday living. One of the things we discussed was using sports drinks for hydration, a topic that I thought others might be interested in as well.
I see people sipping on powerade, gatorade, vitamin water, etc. all the time. One thing to consider is that the purpose of the extra sugar and electrolytes is to replenish what is lost during extensive and very vigorous exercise. So I typically recommend using those types of drinks if you are exercising vigorosly for more than an hour. If you are exercising less than that, plenty of water along with a diet rich in whole fruits and veggies is likely sufficient.