Filming for the Matt Damon-Michael Douglas movie about Liberace must be starting soon because the cast list has grown significantly over the past week. The Hollywood Reporter says that Rob Lowe and Scott Bakula have joined “Behind the Candelabra,” which will be directed by Steven Soderbergh for HBO. Douglas will play Liberace. Damon will play his longtime partner, Scott Thorson. According to The Hollywood Reporter, Lowe will play a plastic surgeon and Bakula will play one of Liberace’s friends.