All Available Season All Season Specials Nov, 2005 30 episodes 0.0 Season 1 Jan, 2005 16 episodes 7.9 Season 2 Sep, 2005 22 episodes 8.0 Season 3 Nov, 2006 21 episodes 8.1 Season 4 Jan, 2008 16 episodes 7.8 Season 5 Feb, 2009 18 episodes 7.3 Season 6 Sep, 2009 22 episodes 7.9 Season 7 Sep, 2010 13 episodes 8.1
