In my view, I think that Lee's work more recently has been the reason for his kighthood because has much more of a proffessional touch than the things he was in earlier, I wasn't really a big fan of the James Bond film he was in and as for Dracula, its very very dated, although I think he still acted well in those.
Obvoiusly I loved him as Sauron, probably one of his best roles recently, and I enjoyed watching him in his role as Count Dooku in the Attack of the Clones and the Revenge of the Sith. I loved the small character he played in Tim Burtons adaptation of Roald Dahl's Charlie and the Chocolate Factory. He was in true Christopher Lee character! I definatley love him, he's a great actor and I hope he can appear in The Hobbit, playing either Saruman or Smaug!