- Sam Rockwell was considered for the role of Tony Stark in Iron Man.
- Sam Rockwell previously worked with Jon Favreau in Made and subsequently on Cowboys & Aliens. Cowboys & Aliens is a comic book adaptation in which Sam Rockwell portrayed Doc.
- Sam Rockwell has been in a relationship with Leslie Bibb since 2007.
- Sam Rockwell also portrayed Head Thug in the comic book adaptation Teenage Mutant Ninja Turtles.