The only Hulk fact that i can see that is wrong is the one about Joe fix It. That is a different Hulk entirely. He is smaller, more intellegent and not as strong. You can learn all about the Hulks at Marvel Comics website.
I don't want to see a Planet Hulk movie. I'd rather see Marvel do a down to earth Hulk movie featuring Rick, Marlo and the return of the Leader. And maybe the introduction of his cousin and his father.