Columns: DVD Name | Ep # | Region 1 | Region 2 (Scandinavia) | Region 2 (UK) | Region 4 | Special features
The Fourth Season | 34 | April 15, 2008 | March 11, 2009 | March 22, 2010 | April 2, 2009 | None | The Fifth Season (Volume One) | 19 | February 10, 2009 | N/A | N/A | N/A | None | The Fifth Season (Volume Two) | 15 | November 24, 2009 | N/A | N/A | N/A | None | The Complete Fifth Season | 34 | N/A | March 24, 2010 | June 21, 2010 | April 1, 2010 | None | The Sixth Season (Volume One) | 13 | May 3, 2011 | N/A | N/A | N/A | None | The Sixth Season (Volume Two) | 14 | July 19, 2011 | N/A | N/A | N/A | None | The Seventh Season (Volume One) | 18 | July 31, 2012 | N/A | N/A | N/A | None