http://podcast.thisamericanlife.org/promos/382.mp3 On National Public Radio's 'This American Life' with Ira Glass today (at 11:00 a.m. eastern): The Watchmen One of the biggest questions about this financial crisis gripping our economy: How did it happen? Wasn't someone supposed to watching things? Making sure people were acting prudently? Stopping, say, the largest insurance company in the world from making a 185 billion dollar bet that it couldn't make good on? This week, we hear the stories of the people who were supposed to be overseeing things.