According to reports, Sam Rockwell has joined the cast of ‘Cowboys and Aliens’. Rockwell will play a bar owner named Doc. Jon Favreau directs, and Daniel Craig , Olivia Wilde and Harrison Ford are already set for the film. Based on the graphic novel of the same name, ‘Cowboys and Aliens’ is a sci-fi western that explores what would happen if the traditional Old West enemies, cowboys and Native Americans, found the prairie attacked by aliens in mid-1800s Arizona. Filming will begin in June.