I loved Revenge of the Sith ... During the Obi-Wan and Anakin battle when Obi-Wan tells Anakin he didn't turn Padm against him but that 'you did that yourself,' it is too hard for Anakin to accept what he has done and it pushes him over the edge to want to kill his former master. And when Anakin is defeated and burned, Obi-Wan watches and cries, 'I loved you,' like his brother it's just so intense and tragic.