I've seen Iggy pop at Storsjöyran, it's a festival in Sweden, that was pretty great.
At the same festival I saw loads of great stuff such as Bigelf and another american band from the west-coast which I can't remember the name just now, but they're pretty big.
I've also seen Silverbullit in my home town, but I was a bit drunk so that might have helped, cause it was a wonderful concert.