He is best known for his television work as Sheriff Seth Bullock in `` Deadwood '' ( 2004 -- 2006 ) and Deputy U.S. Marshal Raylan Givens in `` Justified '' ( 2010 -- 2015 ) .
He is best known for his television work as Sheriff Seth Bullock in `` Deadwood '' ( 2004 -- 2006 ) , and Deputy U.S. Marshal Raylan Givens in the series `` Justified '' ( 2010-present ) .