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Keith Olbermann, whose talk show "Countdown" launched on Current TV on Monday, dropped by "Late Show with David Letterman" Tuesday night to deliver the Top Ten List.
The unsurprising topic: reasons to watch the new "Countdown with Keith Olbermann."
Also read: 'Countdown' Review: Olbermann's Pompous Attack on Aristocracy
The former MSNBC and ESPN star gamely read through the items on the list, which began with a joke about his large head and ended with a gag about … well, just watch.