torchwood is a great show but you should really consider Dr who 2005 series first unless you've seen it, because torchwood is a spinoff. David tennant plays a doctor that travels in time. It airs on bbc and bbc america and just aired the last show on new years. Next season is in april with a new actor named matt smith, but as for torchwood, it has yet to be renewed and just showed its last series over the summer called children of earth. both are the best sci-fi shows that England has to offer