Actor Jason Clarke has signed up & joined the cast of Kathryn Bigelow's untitled Osama bin Laden assassination flick. Deadline broke the story & also state that the potential list of actors up for other roles is quite impressive including Tom Hardy, Idris Elba, Rooney Mara, Jennifer Ehle, Guy Pearce & Nina Arianda. The movie reunites Bigelow with The Hurt Locker screenwriter Mark Boal & follows a Black Ops Navy Seal team who initiate the successful operation that took down bin Laden in his little party shack. The movie soon enters production for a 2012 release. Boal and Bigelow will produce the project, along with Megan Ellison & executive producer Greg Shapiro.