The next episode of Doctor Who will be bittersweet for me. It will be the end of the Matt Smith era and the beginning of the Peter Capaldi era. I look forward to seeing Peter Capaldi, I expect him to have some aspects of the Jon Pertwee Doctor and I hope he stays at least 5 series. But I will miss Matt Smith. I have enjoyed his portrayal of the Doctor very much. He has reminded me of Patrick Troughton and William Hartnell. But changing Doctors has long been a part of the show, and it’s a big reason why it has been so successful.