Well, I'll tell you, I just got back from a 3.5 hour 62 mile ride, drank only water and ate a Clif bar and a peanutbutter sandwich. My post-ride recovery drink was a tall glass of chocolate soymilk.

My sweetie's way more experienced than I, and he has one of his bottles with Gatorade for longer rides and races, and will do a Gu in a race, but otherwise his ride nutrition is pretty much the same -- I think I eat more often, as is appropriate for a woman cyclist!