For movies, I'd prefer to just buy the DVD, then rip it myself for use on my AppleTV. I do trade some movies with my sister-in-law and her family, but I know those files don't go any farther than that. So yeah it's not legal, but in the scheme of things I'm not going to sweat over it. The only time I'll bittorrent something is if I can't rip it from the DVD. Usually I'll be irritated then so I'll grab another movie or two just because I'm ticked at having to go through the trouble. However I'd say that >90% of the time I own all the movies I have on my AppleTV.