Who directed 'The Big Short' (2015)?

Who directed 'Old School' (2003)? Who directed 'Anchorman: The Legend of Ron Burgundy' (2004)? In what year was 'Anchorman: The Legend of Ron Burgundy' released? Who directed 'Step Brothers' (2008)? Who directed 'Superbad' (2007)? Who directed 'The 40-Year-Old Virgin' (2005)? Who directed 'Knocked Up' (2007)? Who directed 'Bridesmaids' (2011)?