Oh he could be good. Even as your icon indicates he got the look good in long blond hair bit down. He looks pretty good in short blonde hair too, ala Cupid in Xena, not that Thor should have short hair. That would be blasphemous.
Also I'd like to recommend the Star Trek movie, even for non-trekkies/ers (whatever it's called). It's a great epic gorgous movie and Karl Urban is one of the best and funniest bits.