To coincide with Tooth and Claw, the BBC have made their first Torchwood themed spin-off website. It's viewable here http://www.visittorchwood.co.uk/. Naturally it has a few neat surprises and 'hidden features' in it, but to be quite frank, I haven't worked them out myself yet! (Password for the Observatory is in the comments)
Anyway, BBC, more please!