 The series was re @-@ released on Blu @-@ ray Disc on November 11 , 2008 , comprising three discs ; exclusive extras to the Blu @-@ ray release include extra audio commentary from Joss Whedon , Nathan Fillion , Alan Tudyk and Ron Glass for the episode " Our Mrs. Reynolds " , as well as an additional featurette , " Firefly " Reunion : Lunch with Joss , Nathan , Alan and Ron . 
