It doesn't need to be the same movie. The ATVs are pulling content. AirTunes is limited to one 'stream' for N number of devices. Using an AppleTV in the normal way does not have this limitation though.
Right. I was just clarifying that you weren't limited to watching different content on different units - and that you can watch the same movie separately on different units if you want to.
Yes on both counts, and here's another one:
tv2s are not limited to pulling from one source either (this was one of the big steps forward with this model). Each
tv can hit any available iTunes source, simultaneously and/or independently. This works great in households with more than one computer running iTunes at the same time, with libraries customized to that person's tastes. My wife can find her stuff on
tv easily, and I can find mine, just by selecting the desired computer.
EDIT: Just wanted to mention that I picked up a second
tv for the bedroom. When we installed it, my daughter mentioned that she wants one in her room. I'm not so sure about that; we'd possibly never get her out of her room.