RTDs went as far as to make one of his main characters a Doctor Who fan, and then give him a K9, me thinks RTDs is going to miss writing Doctor Who.
In fairness in season 4 of Coupling Moffat made one of his characters a sci-fi shopw owner who talked to a dalek in his shop and ran around with a Bring back Dr Who jumper on at one point...he then ensured he scored with an extremely hot woman! He also had Jack Davenport hiding behind a sofa at one point...

Don't wanna get into the classic/new debate...nah who am I kidding of course I do. For all its budget there are times when new Who is nowhere near as clever as the classic series was. The classic series could be very dark on occasion, trouble is that even at its best most eps were stuck with sub par effects. so even something as great (and as adult) as Weng Chaing featured a very bad giant rat! I still maintain, there are classic episodes in both eras (well every era since there's more than 2)