Season 1 NBC , 2002 - 2003 Season 2 NBC , 2003 - 2004 Season 3 NBC , 2005 Season 4 NBC , 2006 Season 5 NBC , 2007 Season 6 NBC , 2008 Season 7 NBC , 2009 Season 8 NBC , 2009 - 2010 Season 9 NBC , 2011