Bonus Feature:
Disc 5: Upon completing "Kelek's Crystal Interactive Adventure", you'll get a bit of animation and then the Dungeon Master will give you instructions to access a hidden feature:
On the Main Menu of Disc 5 press the following keys - Down - Up - Right - Right - Left - Up - Down. You'll now get an animated storyboard for episode 16 "City at the Edge of midnight".

Photo Still:
Disc 5: Go to the second Special Features screen by choosing "More" from the Main Menu. Highlight "DVD ROM Content" and press your Left button. You'll see a photo still of the commentary recording session for the DVD.