This is probably the best televisual news of the past decade. And with a decent writer Russell T Davies on the case (Bob and Rose, Queer as Folk, The Second Coming, Touching Evil, The Grand), hopefully they'll do it some justice.
Not sure who I think should be the Doctor. Tom Baker's still utterly suffused with the Doctor's character (as shown with his expert portrayal of Mr.Wyvern in the Beeb's Randall & Hopkirk (Deceased) remake. He could easily walk the part again. (His autobiography, Who On Earth Is Tom Baker, is a must-read for Baker fans, by the way.)
I used to get Russell T Davies confused with Russell Churney, Julian Clary's pianist on Sticky Moments, which got me thinking about having someone like Julian play the Doctor. That'd be interesting; he wouldn't have to necessarily play him in a camp as christmas manner, let alone making the Doctor gay as a window, although the Doctor's always struck me as being very open-minded, maybe a little on the ac/dc side (all those assistants of both sexes...) And Clary could do the job easily, if fluffy tap-dancing legend Lionel Blair thinks he can pull it off. As it were.