There aren't many things that squick me as far as things generally considered 'Food' go...

Peppers- red or green, aren't favorites of mine, but I can handle them as long as something else covers the flavor a little
Cilantro- I'd do without it unless it's in Thai food.
Energy bars are generally all okay as long as I have something to drink with them, but they're so heavy on the stomach. I prefer gels and oozes, but also if I can have something to wash them down.
Ripe olives=good. Green olives=puke, but I like to suck the pimento out.
v8, when beef boullion cube, celery stalk, tobasco , and optional vodka makes a wonderful drink.

Brussels Sprouts are good when salted lightly- I like the bitterness.
the sour tasting ramen packages from asian markets are among my favorites.
I'm a texture person- but I often dislike chewy or crunchy things and favor the soft or gooey textures. Okra is just fine texture-wise, as is tapioca in bubble tea.
organ meats are okay as long as they weren't part of the digestive tract (menudo, etc) but gizzards are okay if well scrubbed, etc.

Things *not* generally considered food, but edible anyway (depending on where you're from)
Bugs- Ehh... The *flavor* of mealworms, fried or ground, is actually sort of appealing to me. The *texture* is what grosses me out a little. Cricket legs are a little weird, too. Actually, just like anchovies- it's the little hair-ish bones and legs.
fish roe- in sushi, it's the best thing in the world. Fried, it's really beyond gross.