I think Eric Bana is awesome, I'd even go as far to say as he was a perfect choice for Bruce Banner, but Ang Lee is one of those people who really tries to be too artistic and focus too much on emotions in the story. He is a great director with fantastic movies (thought Lust,Caution and Crouching Tiger were both fantastic), he just was not the right man to handle the hulk.

As far as the actors go I felt it was good choices all around, everyone did their job well, but the plot was too drug out to keep it entertaining.