Sword - There is still almost 5 months till the Hulk comes out. From what I hear they are spending all that time improving the CGI effects.
Here is a CGI pic that looks pretty damn cool
Industrial Light and Magic is doing the CGI for this movie. I can't see them screwing this up. After seeing Gollum in LOTR: The Two Towers I bet they started working even harder to improve things. CGI is getting damn realistic these days.