Iron Man 2 is widely considered to be one of the worst movies in the Marvel Cinematic Universe. It also wasn’t much fun to make, with a rushed script, casting issues, and a rumored feud between stars Scarlett Johansson and Gwyneth Paltrow. The messy screenplay is real (sole credited screenwriter Justin Theroux was so stressed that “his back gave out, causing him to require bed rest”), but the actresses claim their alleged tiff was made up.