Well, I can't really compete - but I can try.
Among the normal yucks, there's haggis, mountain oysters and sweetbreads (which I don't think has been mentioned yet and has been banned due to mad cow disease), but the last time I went deep sea fishing there was raw shark.
I don't recommend it, but it tasted pretty damn good, as long as you keep to the end that doesn't take your hand off. To tell the truth though - shark steak is better than any beef steak I have ever had and I will gladly bend over and grab my ankles for some. Who said that the stomach was the way to only a man's - ahem - heart?
I am definitely a southern girl, so rattle snake chili and opossum are on the menu along with fried pickles (yum). Then there's shark fin soup (the only problem with that one was they confused a dorsal fin with the clasper - penis for those who want to know).
But I have to think that the two worst things I have ever put in my mouth (besides my ex-husband) was toasted tarantula (common only at mating season) and bat wing soup (only because I was very hungry).