Theater is much different from movies and television, even though all three do the same thing–tell a story. It is more of a physical experience, and commands the audience's attention more completely. The fact that you are in the same room with the actors lends an immediacy and presence that you can't get from film or television.
No matter what I'm shooting, when the house lights go down, I usually have no idea what I'm in for. Every time I shoot a show, it's an adventure; not only am I going to have a new theatrical experience, but I've also got to be ready to capture something that conveys what it's all about, and ideally makes an artistic statement on its own.
I probably encounter more variety shooting theater than any other category of performing art. There is a rich motherlode of material in the world of theater, and shooting it is a joy!