I would love to see Jack back in DW, but it'd be weird seeing him with Matt because he is so much older. It feels like the show has moved on to a younger cast overall. Would still love to see it though.
Me thinks Mr Barrowman knows a little bit more than he's letting on. That look to camera was very mischievous indeed when he was talking about Torchwood!
I'd love to see him back opposite Matt Smith in Doctor Who and also in a new series in Torchwood. Hope we won't have to wait too long for either!