Watchmen is a 2009 superhero film directed by Zack Snyder and starring Malin Akerman, Billy Crudup, Matthew Goode, Jackie Earle Haley, Jeffrey Dean Morgan and Patrick Wilson. It is an adaptation of the comic book of the same name by Alan Moore and Dave Gibbons. Set in an alternate-history 1985, tensions heighten between the United States and the Soviet Union as a group of former vigilantes investigates an apparent conspiracy against them and uncovers something even more grandiose and sinister.

Following publication of the Watchmen comic, a live-action film adaptation was mired in development hell. Producer Lawrence Gordon began developing the project at 20th Century Fox and Warner Bros. (parent company of Watchmen publisher DC Comics) with producer Joel Silver and director Terry Gilliam, the latter eventually deeming the complex novel "unfilmable". During the 2000s, Gordon and Lloyd Levin collaborated with Universal Studios and Paramount Pictures to produce a script by David Hayter; Darren Aronofsky and Paul Greengrass were also attached to the project before it was canceled over budget disputes. The project returned to Warner Bros., where Snyder was hired to direct – Paramount remained as international distributor. Fox sued Warner Bros. for copyright violation arising from Gordon's failure to pay a buy-out in 1991, which enabled him to develop the film at the other studios. Fox and Warner Bros. settled this before the film's release with Fox receiving a portion of the gross. Principal photography began in Vancouver, September, 2007. As with his previous film 300, Snyder closely modeled his storyboards on the comic, but chose to not shoot all of Watchmen using chroma key and opted for more sets.