Missing Torchwood? Good news. The Doctor Who spin-off has joined the ranks of sci-fi / fantasy shows available in the U.S. on iTunes. And it's already doing well, dominating the downloads for sci-fi / fantasy and jumping into the top ten for TV shows overall – led by the season 1 premiere, "Everything Changes."

BBC America programming, including Torchwood, Robin Hood, Little Britain, and other BBC hits are now available for purchase and download on Apple's music and video service. It's the first time BBC material has been in the iTunes store in America – in fact, it's the first time for any U.K. broadcaster.

The BBC, which has existing deals with YouTube and MySpace and was the first UK broadcaster to offer shows on iTunes in the UK, now offers its programming in the U.S. for $1.99 per episode to watch on computers, video iPods and iPhones, and Apple TV.

For a direct link to the iTunes store (if you have iTunes on your computer), click for season 1 or season 2.