Re: TIH vs. Ang Lee's Hulk
Eh, I'm okay with Bruce being able to change at will at times. I definitely see your point; their needs to be a Hulk vs. Bruce struggle.
But, at the same time, Batman isn't ALWAYS obsessed with his dead parents, and sometimes things go right for Peter Parker. Bruce vs. Hulk is the same thing. Bruce might be able to control it here or there, but as long as he ultimately reverts back to being at odds with his transformations, he's still interesting, IMO.
It's like a non-consecutive 24-hour dance party.