NBC Video Library
 

NBC has a decent video library available online. While the promotional statement is a bit amusing Watch new seasons of The A-Team, Battlestar Galactica, Miami Vice, and more online now! Stay tuned for all new classics arriving soon. (with a picture of George Peppard as Hannibal next to it) it's pretty cool to see some of those shows available online.

Yes. I got to try out a beta version of this. I believe it's still only available to people in the US though.