Yeah, he really stands out on the Tudors. He has quite a good depth of expression, coupled with significant charisma. I think he could bring something really good to Superman. Superman in film (at least to me) has always seemed a bit shallow and overly boyscout-ish. Depending on the script, I think he could bring some depth to the character that has previously been lacking. I'm looking forward to it.
I would also wait but I cannot imagine them doing this unless they have some idea of how to make it technologically new also, which might require a big screen viewing. We will see.