So Christoph Waltz was pretending to be American? Did he pass for you?
I couldn't help thinking that he was a European something, given his accent. Yes he sounds a lot more american than usual, but i've met lots of europeans who speak with quasi-american accents. Perhaps because of this I can still hear his european accent shine through.
I think his tendency to over-pronounce words also makes me think of him as a foreigner.