Tital says it all. For me its Mr Stevan Segal, http://www.imdb.com/name/nm0000219/, I once walked out of a movie because he was in it, i would never watch a movie by him. I would rather sit in a dark room doing nothing insted of watching a movie he is in. I know many people who have a worst actor and would never watch a movie they are in. Who is yours?