Ritual, Theatre and Play - random hits of the day
Metamorphic Ritual Theatre: between performance, role-playing game and ritual
Our Troth: Aasatru on the internet, a compilation of online and offline resources on the modern version of the ancient Norse religion. Chapter 36 is concerned with ritual and Theatre
A Booklist on improv theatre. Role-playing is often compared with improvisation. While it does have a lot of the aspects of improv, it's not the same thing.
An other bibliography on theatre and playing, Augosto Boal featured here.
An argument in favour of games being theatre and the other way around. Interesting little piece.