What is it about tyrants that gives media types goose flesh? The question came to mind while pondering "60 Minutes" thug Mike Wallace's transformation into Barbara Walters in an interview with Iranian President Mahmoud Ahmadinejad. Wallace's reputation is as an ambush interviewer – the tough guy who's not afraid to ask any question of anyone. He's the eternal cynic who won't buy anyone's lies. He's the emotionless inquisitor. He's the media's version of Torquemada. What a matchup! Wallace vs. Ahmadinejad. How many rounds would a bout like this last? Would Wallace ever make it out of Tehran alive? How long...