I follow my own pyramid - fresh veggies everyday if possible, no sweets or red meat, little fried foods. Once or twice a week, I allow myself Baked Lays but I include them in my calorie count.
I think the Harvard pyramid is more informative. I really like that it suggests exercise as a foundation for your eating. I like to work out in the morning. If I skip the gym, I know I really have to watch what I eat that day. I have a banquet tonight so I know I have to do something more than walk my dog for 20 minutes.