Nude Celebs: Zack and Miri Unknowns - Zack (Seth Rogen) and Miri (Elizabeth Banks) have been platonic friends for years. When they both find themselves in financial hot water, they hit upon the idea of making an adult film to bring in some easy money. But when "action" is called, these two friends discover that unspoken feelings for each other may threaten the whole enterprise. Writer-director Kevin Smith helms this comic look at the line between friendship and romance. Also starring Traci Lords, Katie Morgan, Lena Cheney