 The fourth season 's DVD released on September 9 , 2008 , features an interview with Heigl and Chambers , extended episodes , bloopers , and deleted scenes . Season five 's DVD was released on September 15 , 2009 , and includes unaired scenes , bloopers , and extended episodes . The DVD for season six , released on September 14 , 2010 , features deleted scenes , an extended finale , and bloopers . The seventh season 's DVD , released on September 13 , 2011 , includes an extended edition of the musical episode , bloopers , as well as deleted scenes . In addition , the eighth season 's DVD was released on September 4 , 2012 with several bonus features and deleted scenes . 
