Casino Royale is a great Bond film, but Daniel Craig doesn't look like a real Bond. He looks too hillbilly-ish and melancholic IMO. Otherwise I never care much about that. There is a lot of things tha "defines" a real Bond theme.
My personal favourites must be (in a random order) Dr. No, The Man With The Golden Gun, The Living Daylights, License To Kill, Goldeneye, Tomorrow Never Dies.
Well pretty much all the newer ones, which are not real Ian Flemming stories (most of them). The others in the series are good as well and bigger classics, but I guess it's the action (and the women

) that makes me choose the later films
