Michael RosenbaumMichael Rosenbaum (born July 11, 1972) is an American actor and director. He is best known for portraying Lex Luthor on Smallville and Flash in the DC animated universe.FilmographyThe Neighbor (2017)Impastor (2015)Hit and Run (2012)Breaking In (2011)Father of Invention (2010)Kickin' It Old Skool (2007)Bringing Down the House (2003)Sorority Boys (2002)Poolhall Junkies (2002)Smallville (2001)Sweet November (2001)Justice League (2001)The Zeta Project (2001)Urban Legend (1998)