Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
There are some actual HD videos going around on BitTorrent. Theres an episode of Lost from the second season and it is around 4.1 gigs. I tried it and it looks pretty awesome, although 4.1 gigs is way too big.
Some HD movies can also be found on torrent sites.