Natalie Portman dislocated her rib while shooting Black Swan and had to give up her trailer so the low budget film could afford a medic for the rest of shooting.
Iron Man first appeared in the Marvel Comic “Tales of Suspense” in 1963.
The Hulk made his debut in 1962.
Disney wanted Robert De Niro as Captain Jack Sparrow, but he declined the role because he thought the movie was going to bomb.