Note for the non-English audience: this and also the Vol.4 (13-16) DVD have no any subtitles.
Easter Egg: press the 'right' button when marker is on any of the Special Features menu items except the 'Main menu' then click the cup that appears on the right of The One That Goes Behind The Scenes.
Solution: You Buy This DVD !!
In case you want details to convince you:
(1) Final Episode (48 mins approx)
(2) Flashback Gag Reel (32 mins approx)
(3) Friends Of Friends Part 1 (12 mins approx)
(4) Friends Of Friends Part 2 (19 mins approx)
(5) Friends Of Friends Part 3 (19 mins approx)
(6) Friends Around The World (7 mins approx)
(7) The One That Goes Behind The Scenes (42 mins approx)
And some other stuff, and some hidden stuff as well.
Have I convinced you ?!
I hope so, then everyone can laugh at loud with me :o)