Also, for any AppleTV owners who use a Mac and an Apple Airport, Wake on Demand, will allow people to keep their machines asleep most of the time, and the AppleTV will just wake it when needed. This is how the older one works too. If I play a show locally, works as expected. If I want to play a show only on my computer, I'll hear my system wake from sleep when I'm browsing the menus to select it.

I believe Bonjour 2.0 also added Wake on Demand to Windows, so as long as the machine supports the normal Wake on LAN and the network is hosted by an Airport, it should work. I'll try to do some testing later of this. Bonjour 2.0 is inside the print services, downloadable here.

Oh, anyone interested in the old AppleTV with hard drive, it's on clearance for $149.