Corn. And just about anything made with corn. Corn chips, polenta, corn on the cob, cream of corn soup, corn fritters, corn bread.
...Corn Syrup, High Fructose Corn Syrup...
I don't eat much junk food at all anymore, though I have been trying a couple of vegan treats every now and again, more just to see if I'd recommend them to other people though. An organic food store by me carries these Rice krispy treats (though made with brown rice and natural peanut butter) which I liked, but I don't eat much.
I'm with BigBwii & Will though. If you cut my arm open with a knife, Citrus Juice would probably bleed out. I simply can't get enough.
But other than that there's lentils, kiwi, natural peanut butter, almonds, apples, berries (with the exception of raspberries).