Monologue | Thursday night on “The Late Show With David Letterman” on CBS: There’s a show on CBS called “The Mentalist.” It’s about a detective with heightened powers of observation. Let me give you an example of how good this guy is. This guy is so good, he can tell the difference between a Goldman Sachs executive that is a lying crook and a Goldman Sachs executive that’s a lying weasel. He’s that good. Read more…