I don't think Thor actually *works* voice-wise. I know this is because well, I have a hard time with Marvel Thor in general. (The first real "grown up book" I read was "Gods and Heroes of Norse mythology" for chrissakes) but the entire Lee-esque dialogue really doesen't work. There is a particular kind of rhytm that works for viking stories, it's very laconic, and very... Flat? Not really the right word, but it tends to be a few words of badassery rather than a long harangue. And Marvel's Thor is not it.
The Hulk/Thor animated thing? Totally not working for me. Even if I think it was a good voice for the comic-incarnation. It's just not a good Thor.