It's used for a lot of legal videos as well, like Sita Sings the Blues http://www.sitasingstheblues.com/wiki/index.php?title=SitaSi... also Vodo uses BT to distribute their movies. http://vodo.net/ Revision3 used to run their own tracker with only their own videos listed, but there was some legal trouble so they shut it down. I'm seeding Geocities from http://archiveteam.org/index.php?title=GeoCities but that's pretty niche :) I'm also seeding a bunch of videos from a hacker conference (CC licensed).