11/25/2009 05:12 am ET | Updated May 25, 2011

Craig Ferguson Does Mick Jagger Impression On 'Letterman' (VIDEO)

Dave's late night partner, Craig Ferguson, was his guest last night. Ferguson, who is promoting a new book, told Letterman about his meeting with Mick Jagger, whom he described as a "sexy dinosaur," and proceeded to do a pretty impressive impression of the Rolling Stones frontman.


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