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Uploaded on Feb 4, 2009
For years, Jon Hamm languished in relative acting obscurity, but thanks to his charismatic and enigmatic role in Mad Men he is now a bonafide star. He guest stars tonight on 30 Rock to test out his comedic chops, but first thing's first, Hamm reminisces on the early Mad Men days and he explains why it has been such an important chapter in his career.