Streaming from Apple TV to MacBook
If you want to watch Netflix on your Mac, the best way to go is just use Netflix.com (you'll need the Silverlight plugin).

AppleTV doesn't have any capabilities to send streams (ala AirPlay), just receive them from other devices. The reason for this is effectively that the Apple TV doesn't really hold any content. It sources it all from other places, all of which can be accessed from your Mac (i.e. iTunes, Netflix, Hulu, etc.).