Doritos. Cooler Ranch preferably. Nacho Cheesier is OK, but not as good. I can't really describe the awesome flavor. It would ruin it for you if you have never had Doritos. Which if you haven't, God, where have you been. Unless, of course, you live in a country where they don't sell Doritos.
You know what would really nice would be a thread on your favorite candy bar *coughs* Butterfingers *coughs*....although I don't know if there has already been a thread on this topic.