http://herocomplex.latimes.com/movies/harry-potter-a-decade-of-hogwarts-professors-and-first-class-actors/attachment/clh1-ca-os-1106-potter-o-1/. 13. Link. Professor Gilderoy Lockhart (Kenneth Branagh) - defence against the dark arts. Lockhart loved the spotlight -- so much that he was willing to lie to stay in it.