Launch a left-wing talk-radio network in a medium ruled by the bully pulpiteers of the right? They said it couldn't be done. Air America Radio exec Jon Sinton recalls the loud whispers before last year's start-up: "They said, 'Liberals aren't funny or engaging. A concept of a liberal network is stupid.'"
And for a while, they were right. The name-brand hosts, comics Al Franken and Janeane Garofalo, were audio amateurs. In their on-the-job training, three hours a day, they learned that comedy is easy, radio is hard. The most persuasive hosts were radio veterans Randi Rhodes and Rachel Maddow. But Air...