The foods on this list I've never eaten and probably won't. Fugu or sashimi pufferfish is a dish that will kill you if not prepared right. I can't remember which organs have the toxin, but it's one of the most dangerous toxins for humans. Not sure if Japan made an antidote for it or not.
Kiviak, little auks stuffed into a seal's stomach and left to ferment. Quite a bit of people get botulism and die from it.
Some sort of Jamaican dish with ackee, a fruit that's toxic if under ripe.
Polar bear meat, too much vitamin A is going to kill you.
The Korean dish where they eat a live octopus. Really not sure how I feel about it since I've seen videos where they dump lime juice and salt in the octopus's eyes before eating it, but people die from choking as the octopus doesn't want to die and clings onto their teeth.