I have been using you tube for awhile and enjoy it. It's cool to be able to see library conference talks, I tried hulu, but they have commercials in the tv show episodes. I don't watch tv partly because of the commercials. DVDs allowed me to start watching tv shows.

I scoped out fancast and no commercials! The video quality is still not on par with DVDs. By the way, I watch dvds on my PC. I don't own a tv. I'll probably use both for things like previewing shows or the interviews.

All three sites are useful for libraries for the info they all have in answering questions.