In 2009, he played a smart yet socially inept underperformer whose wife will do anything to help him climb the corporate ladder in "Queen of Housewives"; despite being outshined by his other costars, Oh proved his willingness to look foolish in the service of comedy (similar to his turn in the 2005 series "Super Rookie"). Oh then reunited with "Single Dad in Love" television director Kwak Jung-hwan in his most high-profile, critically acclaimed series yet: historical drama "The Slave Hunters" (2010). Using his physicality to great effect, Oh portrayed a Joseon military general who becomes a runaway slave and his performance garnered him an Excellence Award at the 2010 KBS Drama Awards.