I think the first half to two-thirds of The Hulk is actually rather good. Ang Lee's visual approach to filming a comic book is very interesting. It doesn't get really stupid until Nick Nolte shows up and the movie is basically ruined from then on with a lot of over-the-top acting and extremely poor writing.
I think I will amend my earlier response and say that Elektra is the worst summer movie I've seen in the past five years.