Jessica Chastain

When something happens, I always check myself and know it's going to go away. So be prepared for it. This is a tough business for actors who are sensitive. If you try to hold on to things, you'll go crazy.

'Star Wars,' 'Doctor Who,' 'Forgotten Realms,' even 'Firefly' and 'The X-Files' have shared world novels and other media. I can't help but notice these settings have large shelf space in bookstores, so their publishers and authors are getting something right.