All Available Season All Season Specials Aug, 2011 9 episodes 0.0 Season 1 Apr, 2009 26 episodes 8.1 Season 2 Oct, 2009 26 episodes 9.2 Season 3 Apr, 2010 25 episodes 9.7 Season 4 Oct, 2010 20 episodes 9.6 Season 5 Apr, 2014 35 episodes 6.0 Season 6 Dec, 2014 26 episodes 6.5