They are old black and white Mickey catroons...of course, Steamboat Willie is one. There are about six small screens with a raised platform in the middle of the room...no seating. Plane Crazy also shows there.
We love it and make sure to stop in every trip. Many people feel it should be updated, but I don't feel that way. I'm a bit of a traditionalist and love seeing Walt's (and Co.) early work.