Stephen Colbert revealed on "The Late Show with David Letterman" that he had a cameo role in "The Hobbit: The Desolation of Smaug," but refused to give further details. However, Colbert's game of "Where's Waldo?" has come to an end, as a video popped up on YouTube with a still frame of him in character. Watch the video below to see Colbert in full Middle Earth garb.
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