Just got back from seeing this, and it was awesome. I really liked the first Hulk movie; I loved this one. All the easter eggs, the multiple origin stories- [spoilers]three and a half, by my count[/spoilers]- the performances. I was a little disappointed Tim Roth didn't even try to make his accent more Russian, though of course they handwaved that by making him raised in Britain (did find it odd he was wearing an American armed forces uniform, though; not being too informed on armed forces protocol, shouldn't he have been wearing a British uniform? I thought they said he was SAS...)
Would have liked to see more Samson (and I don't think they mentioned his name in the film anywhere; Betty might have called him Leonard at one point, though I'm not certain- this movie, like Iron Man, suffered from the lack of naming of characters in a couple of instances, though not quite as badly). Loved Sterns- when it became clear that Bruce's confidant wasn't Betty, I got this dawning suspicion that it would be him.
I'd love to see Norton's cut- the one he and Marvel had issues with. I haven't been paying attention to the press, since I wanted to avoid spoilers, so haven't noticed if Norton's been doing the press circuit or not- if not, that may not be a good indication of him coming back.