Doctor Who and Torchwood actor John Barrowman will be appearing on tonights edition of The One Show. John will most likely be discussing Doctor Who, Torchwood, and other things he has done in his career. There are rumours that John Barrowman will be talking a bit about the upcoming series of Torchwood, which is due to air later this year. Make sure you dont miss The One Show at 7pm tonight on BBC One, and if you miss it you will be available to watch it for the next seven days on BBC iPlayer if you are in the UK. To go The One Shows official website then click here.