can Mac Book Pro play Bluray and can i sling that to apple tv?

The optical drive in the MB cannot play Bluray discs.

It's a DVD SuperDrive, not a Blu Ray! And if you were to plug one in, the OS won't have a clue as to what to do with it. The late lamented Steve Jobs, and Apple thus far, decided not to support the format, hence why you won't see one of those drives in a Mac.

You CAN get it to (eventually) play, but will have to purchase expensive third-party applications. Beside the expensive external drive. And you probably won't be able to "sling" it to your TV, cause that's precisely what the movie cabal doesn't want you to do.