18 shows cast 21 stars, as Marcia Gay Harden shows up to Smother, Jim Caviezel signs on to star in a project from JJ Abrams and Jonah Nolan, Anjelica Huston is the latest to star in a Spielberg effort, 17th Precincnt adds yet another Battlestar alum, while Wonder Woman snags a friend, and John Stamos lands on a Law & Order run.