Oooh, I used to like putting peanut butter on a hamburger growing up. Like spreading the peanut butter on the top bun like you would with mayo or whatever. I didnt use anything else, just peanut butter : p I remember that I really liked it.
I also like putting peanut butter in my ice cream. Like a scoop of peanut butter right on top of it, gotta mix it in though cuz its heavy : p
Oh and on pancakes, too.
I use plain potato chips, and its great : p
Oh and growing up when I would eat bologna sandwiches, Id put the potato chips on top of the bologna right under the top piece of bread, It was really good too.
I like to add an egg to ramen noodle. But that one is actually becoming popular.
Oh, and I like adding BBQ sauce to mac n' cheese. Its one of my favorites, actually.