Season 1 CBS , 2003 - 2004 Watch now Season 2 CBS , 2004 - 2005 Watch now Season 3 CBS , 2005 - 2006 Watch now Season 4 CBS , 2006 - 2007 Watch now Season 5 CBS , 2007 - 2008 Watch now Season 6 CBS , 2008 - 2009 Watch now Season 7 CBS , 2009 - 2010 Watch now Season 8 CBS , 2010 - 2011 Watch now Season 9 CBS , 2011 - 2012 Watch now Season 10 CBS , 2012 - 2013 Watch now Season 11 CBS , 2013 - 2014 Watch now Season 12 CBS , 2014 - 2015 Watch now