The other day I passed along to my friend, Jude, a recent book I read called Sanford Meisner on Acting. As I handed it to him, several people said it is a great book. I agree. While it's not specifically about improv, the book does include advice and exercises that are germane to this art form that many of us are passionate about. Meisner's beliefs such as "acting is the reality of doing" and "acting is behaving truthfully under imaginary circumstances" are the root of improvisation.
There are other books out there that aren't specifically about improv but still teach us valuable lessons concerning it. One that comes to mind, and one that several people have read at DCH, is The Inner Game of Tennis. Another one that I recently read is The Chairs are Where the People Go. Check them out if you haven't yet.
What are some other non-improv books you've read that can be applied to the improv world? What did you learn from them? Please let us know in the comments.