Keith Olbermann is primarily known as one of American TV's most controversial political talk show hosts. However, the unabashed liberal commentator also has an encyclopedic knowledge of films, as well as an off-the-wall sense of humor. Olbermann devoted a segment of his show Countdown to paying tribute to the late Leslie Nielsen. He shows clips from early in the actor's career and astutely points out that his renaissance as a comedic actor was due largely to his ability to spoof his own image as a stalwart, cardboard heroic type. Olbermann rightly observes that Nielsen could never return to playing a dramatic part, but the trade-off was worth it. Click here to check out the insightful segment, along with some great clips highlighting Nielsen in Airplane, Police Squad and The Naked Gun.