The Hulk was not your average comic book film. Ang Lee gives it a deeper feel, which I think suits it well. The Hulk is all about internal struggle, between his higher-functioning brain and the more primal corner that contains his power. Lee focuses on that introspectiveness.
To those who say the CG graphics are horrible, I say “phooey.” Well, except for the part with the mutant dogs. That just looked bad. But the rest is the Hulk as he was meant to be. Large and in charge… and green.