Do mushrooms count? I know they're a fungus but generally are considered a veggie and I can't stand them, although I like the flavor in some things like a mushroom broth. It's a texture thing.
Zuccini, most greens, eggplant, brussel sprouts, beets, turnips (but I love rutabaga's), radish's, horseradish and raw snap peas are my least liked.
I don't like raw cauliflower or broccoli but I love both when cooked. I abhor canned asparagus but love it fresh. I guess I'm the lone one here that actually (gasp) likes canned peas.
Corn too. I'm not very fond of raw tomatoes but we go through an insane amount of canned in our cooking.
I did have eggplant parm once that was really good and brussel sprouts that I enjoyed but haven't been able to achieve that at home, maybe they were cooked like Daval explained, I'll have to try again.
I know I forgot something...