4. Gwyneth Paltrow Wasn't The First Choice For Pepper Potts
The relationship between Tony Stark and Pepper Potts and chemistry between Robert Downey Jr. and Gwyneth Paltrow are widely considered highlights of the Iron Man movies. However, Paltrow wasn't Jon Favreau's first choice to take on the role of Iron Man's secretary/girlfriend/future Stark Industries CEO. He originally wanted Rachel McAdams to take on the role, and Marvel only turned to Paltrow when The Notebook star decided to turn them down. Her career hasn't suffered (and Paltrow's arguably hasn't benefited greatly), but she would have no doubt been better suited to the Rescue side of the character at least. It's interesting to wonder how things would have differed if McAdams had taken the role, especially as Paltrow reportedly had problems keeping up with Downey Jr.'s riffing during shooting. Paltrow's future in the Marvel Cinematic Universe isn't clear as of right now. She didn't appear in Avengers: Age of Ultron and there's no sign of an Iron Man 4, but rumour has it that Pepper may end up reappearing in Captain America: Civil War next year.
