Bana had the face for Banner, but he was too physically big, which lost some of Banner's wimp effect. Too bad he didn't get the chance to Hulk for us.
Norton was superb in every aspect including his Hulk. Norton was on par with the hard to beat Banner, that was Bill Bixby. The early comic book Banner was blah, but I enjoyed the 70's - 80's comic book Bruce Banner who was influence by the TV show. Norton showed a little of all of the Banner's.
The first scene that got me was in the opening credits when he's sitting by Betty's bed and Ross confronts him. Something about when he got shoved by Ross then sees him talking to the soldier and the look on his face when he decides he better take off was gold.
The bottling factory scene when tough guy number 1 was harassing Martina, and Banner first walks away, then comes back, I thought Norton nailed it. There were many awesome scenes from Norton throughout the movie.
His Hulk movements were nothing short of stupendous. The way he cocked into the roar after the leap from the catwalk is mesmerizing. His swatting at the bullets gave real feeling to CGI Hulk. The cave scene IMO is Oscar worthy on so many levels from acting by Norton, Liv and the CGI artists. Norton's Hulk emotions captured Hulk for me.