Taking on a disturbing role can often overwhelm an actor with intense emotions, but that doesn't seem to be the case for Zoe Saldana on the set of Rosemary's Baby. The actress lit up with a big smile during production of NBC's upcoming miniseries in Paris this week. Saldana is playing the lead in the project, which is based on Ira Levin's classic novel and Roman Polanski's hit horror film of the same title. In other on-set moments, Ryan Reynolds sported a beard while filming in crawfish country, and Milla Jovovich and Pierce Brosnan brought on the action during production of their new thriller. Check out all that and more in this week's best on-set pictures!