I took a long look at the beta for Slingplayer with Apple TV compatibility inside. And I liked what I saw. So I installed it on all the other Macs in the house. Only to find out that the beta expires tomorrow and that version 1.0 is out today. Go download it if you're a Slinghead. And btw, the Apple TV support is a Mac exclusive now.
Mac Client v1.0 [Sling]