Half-way through 'Children of Earth', the third series of 'Torchwood', on iplayer. Torchwood from the beginning was extremely silly, and strained one's willing suspension of disbelief to breaking point, and this is also something of a rip-off of John Wyndham's 'The Midwich Cuckoos', but it's very enjoyable all the same. The last episode of series two, sardonically called 'Exit wounds', and dealing with the deaths of Owen and Toshiko, was almost moving, but not quite.