[Eric] Bana plays a scientist whose genetic experiment to create superhuman beings bound for Mars goes wrong, and he gains the ability to mutate into a superstrong being. The same experiment transforms three escaped convicts into supermutants, and only the scientist's alter ego, the Hulk, can stop them.
Gee, that doesn't sound like the movie I've been hearing about. My sister, who's actually seen the film (her review? "It's bad."), says there's certainly nothing about Mars or escaped convicts in the movie that she saw. So I go to the IMDB, pull up the page for The Hulk, and lo and behold, there's this plot summary posted:
A scientist's genetic experiment to create super-human colonialists bound for Mars goes wrong and he gains the ability to mutate into a super-strong being. The same experiment tranforms three escaped convicts into hideous super-mutants and only the scientist's alter ego, the Hulk, can stop them.
Yup. There's nothing that says in-depth research quite like copy-and-pasting material from the internet.