I remember trying sushi in Japan before it became popular in America and that doesn't even come close to making the list. Here are a few of the most unusual foods I remember from my travels.
Steamed jellyfish and boiled duck feet in China
Reindeer stew in Finland
Roast impala in Kenya
Kangaroo (fresh of the barbie) in Australia
Haggis in Scotland
I've sampled all manner of great food from char-grilled oysters in Mississippi to tako yaki (fried dough balls with bits of octopus inside) in a Japanese park to local tropical fruits (most of which I can't recall the names) on islands in the South Pacific to fantastic seafood from oceans, lakes, and rivers around the world.
What foods have you tried and loved (or hated) during your travels?