10 Most Memorable Guest Stars of 'The Office'

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After nearly eight years of being on the air, the lovable paper-pushers of The Office said goodbye in NBC's two-hour series finale on May 16, 2013. Throughout the show's nine seasons, we saw familiar faces come in and out of Scranton, Pennsylvania. From Will Ferrell to Amy Adams, here are 10 of The Office's most memorable guest stars.