Supernatural (and others) online!
If you missed the WB's excellent series Supernatural last season you can catch it collected on Peekvid.
They also have some episodes of Lost, Stargate, and (among many others) MST3K and Are You Afraid of the Dark?.
I wish I had time to check out the new series Kyle XY.
Who knows how long these videos will stay up online, so get them while you can.