Recently I was in Philippines, my friend told to taste balut.
http://en.wikipedia.org/wiki/Balut_%28egg%29

At first I almost vomit because of the taste, but when I learned how to conquer it(eat it). I don't problems dealing with it.

The most unappetizing food I have ever eaten is the Durian. It will not, however, become a food that I will have ever eaten twice.

I had some swamp rat stew in Belize. And some miniature deer, at the same restaurant. I've eaten some weird things in China and other parts of Asia too.

+10000000 for Durian! Don't believe people who tell you it's sweet they are horrible mean people who want you to suffer like them!

I had a fresh sea urchin (still wriggling) in the Cook Islands prepared by cutting off the top of the shell and dressed with a squeeze of lemon juice. It was a gift as compensation for a diverted taxi ride and I haven't seen it on a menu since. It was really quite nice!

At the top of my list as well. Very difficult to get past the sight; best not to look at it (opened). I've had it a couple times from a Vietnamese co-worker. The crunch of the little bones is delightful! Certainly fits into the realm of "sport food"

Grilled dog meat in Morocco, washed down with orange Crush. It was very tasty, so I had seconds.

Fried scorpion in rural Laos. It did not taste like chicken.

Cuy was a bit strange, but pretty tasty.

I can imagine, probably kind of similar to the whole baby grilled chickens street food we had while in Thailand.

you are a smarter man than me, I've tried the fruit 3 times, each time it gets a bit better. I'm up to only a slight gag now. That said, I've had durian pastry & ice cream that were both very good.

I think one of the strangest thing I've eaten is live octopus in Korea, some other FT'ers and I went to Seoul and on our first night while drinking mighty amounts of soju, the place were we were drinking served it to us. The restaurant takes the live octopus, stretches it out and then hacks the legs into 1-3" wriggling pieces that will use their sucker to attach to your mouth if you don't chew enough. Truly good stuff.^

balut is hard core IMO but I would try it if given the chance.

Grussellt, Sea urchin is commonly eaten in Japan, and is called uni. It is considered a gourmet food.

I'd have to say that I didn't enjoy my experience with balut. I didn't really like biting the head off the embryo.

Fortunately, I did give a second chance to durian. The first one I had the sulforous part was a little overpowering which made it hard to enjoy. But the second time, I liked it. It has a very rich, lightly sweet taste, if you get a good one.

There's a restaurant in Johannesburg that serves exotic game animals. The two times I was there I had ostrich and gemsbok. From the meat texture you could tell that they were active animals. The texture was similar to Argentinian beef.

I was in the northeast part of Thailand during the dry season, and a young boy taught me how to catch grasshoppers by dumping water down their hole and catching them running out of their other holes. They fried them for us.

In northern Thailand, I was invited over to a family's house for dinner. They served the local specialty of red ant eggs, which was made into a kind of salad. It had kind of a bitter taste. When asked for my reaction, I said that it was something interesting that I hadn't ever experienced before. The daughter burst in to laughter and said "yeah, we don't like it either!".

Blowfish sperm

Race horse carpaccio

Sake with rotting blowfish fin in it (you have to light it on fire before eating it to burn away some of the smell)

Very recently deceased aji (sardine I think) with the gills still moving

Crocodile

Emu

Kangaroo (although not uncommon for those in Oz)

Slugs.........to be honest I didn't actually swallow them.

I was camping out and had left a opened carton of milk outside the tent all night. Woke up took a slug of it and got a mouthful of the slimey creatures.

I think there are two main obstacles that balut poses to westerners: the cuteness factor of baby whatevers, and the strong yolky aspect.

I don't pretend to know anything about the cuteness factor.

I do know that I hate hard-boiled egg yolk. This makes balut 80% disgusting, since it has a very large and concentrated yolk. The "tea" part (fishy-tasting liquid in the airspace of the egg) is okay. And the actual embryo tastes good with plenty of salt.

"Something" grilled at a roadside stand in Mexico. I didn't even try the translation. My host ate it first so I knew it wouldn't kill me.