The best wing challenge I've seen in MN is at Girvan's Grill in Brooklyn Park. It's called the Ghost Wing Challenge. It makes the Blazin at Buffalo Wild Wings seem like child's play (because it is). Check it out!
My brother took this challenge and failed,but I was able to try a couple.They were by far the hottest thing I have ever tried!They actually had good flavor for something with extract in it though.