This is the advice I got from my trainer so I normally follow this, although sometimes it's more like an hour before I eat. I also read an article about the post-workout meal being the most important, and the meal should contain protein, good carb and healthy fat.

Oh yeah - major munchies - what I do:

1) guzzle water - sometimes when you think you are hungry you are really thirsty

2) sliced apple and a light string cheese - eat slowly

3) track the calories you are burning and then when you look at the calorie info on what you are about to consume - you'll realize how much work it is to burn it off

I'm always hungry and I always have a snack (or meal, depending on when I finish my workout) after working out. I plan for it in my calories for the day. Lately I have been trying to make sure it includes a protein. As others have noted, I've read and my trainer has told me that your metabolism is more efficient after exercising, so this is a good time to eat.

I also make sure I drink 16 to 20 oz of no-calorie, non-carbonated beverage (usually Crystal Light) with my post-workout snack. I would be better if I drank plain water, but I really don't like it. I drink plain water with my lunch and my reward for doing so is that I don't have to drink it plain the rest of the day.