Features: Audio Commentary: Producer's Audio Commentary on 3 Episodes; Documentary: 'The One that Goes Behind the Scenes' full length documentary; Delete Scenes: Episodes with never-before-seen bonus footage!; Featurette: 'Friends: On Location in London' behind the scenes featurette; 'Guther Spills the Beans' promo for next season. 4 discs . full frame . 5-0 Dolby Surround .