ESPN360.com

Sports. This is the one thing that stops a lot of people from dropping cable.

ESPN360 has live and replay feeds from all of the ESPN networks. The NBA games that are show are live. The replays usually go back a few days. As of right now they have around 50 games available from this past weekend. Ranging from Soccer to College Basketball.
http://espn.go.com/broadband/espn360/schedule?

Don't know how hard it would be to do this but it uses MoveNetworks and works similarly to ABC.