I've sometimes thought about this, and I've always thought, the more "refined" the murderer the better (like those Jack Cassidy ones, especially Ken Franklin). But it just occured to me, that Faye Dunaway was in a Columbo episode. If you HAD TO be killed by someone, it would be a little romantic, not only to be killed by Faye Dunaway, but by Bonnie Parker, so to speak.