(S01E01) It's really not surprising to discover that the BBC's Doctor Who spinoff Torchwood notched up the biggest audience for a non-sport program on a digital TV channel (in the UK, at least).

Having just watched the first episode of the opening two-parter, I can honestly predict with a degree of certainty that the BBC has found itself another sure-fire hit from the mind of Russell T. Davies.

And do you really want to know what happened in this innaugural episode?

Warning: spoilers after the jump.