You can now pre-order a 5-disc DVD set of episodes of Stargate SG-1. The discs include some behind-the-scenes stuff and interviews.
The first Farscape DVD is now available and it includes the first two episodes of the series. Plus some cool extras. The second, third, and fourth DVDs are available for pre-order, they each contain two episodes of Farscape.
Also: Don't forget to pre-order Season 3 of The X-Files if you haven't yet and are into that sortof thing. It's worth it to me just for the promised commentary track on "Jose Chung's From Outer Space" by Rob Bowman and Darin Morgan. But I'm a geek.
And I like plenty of other season 3 episodes, too.