Already people are saying Peter Capaldi be as good as David Tennant or Matt Smith. I wish they'd shut up and give him a chance. We've seen him in both Doctor Who and Torchwood giving excellent performances before, there's no reason he won't be good. Also, The Doctor does not need to be attractive. In fact, I think that casting Capaldi might bring back some of the magic of the classic series. He'll also bring a bit of maturity to it, as long as Moffat lets him.
Sorry for the rant, I'm a huge fan of the show and it really annoys me that people can't give the new actor a chance. We had the same thing when Matt Smith was cast.