Costas Karras, a popular actor and former conservative politician, died Sunday, May 6, in Athens of complications from cancer. He was 75.Although Karras became popular as a cinematic actor, it was onstage that he achieved critical acclaim, most notably in Nikolai Gogol’s monologue “Diary of a Madman” and Noel Coward’s play “Blithe Spirit.” Karras went to London in the 1950s to study political science but graduated from the Royal Academy of Arts. He also studied theater in Greece and debuted onstage in 1963. Karras also served as a conservative member of Parliament from 2000 to 2007. He is survived by his wife and a son.