Bonus Feature:
On Disc 1, go to the languages menu and there will be options for a mono audio track in both the "Mawgese" and the "Dinkese" languages. Selecting either one will take you to a brief clip of the film in those languages.

Interface:
On Disc 2, after you have chosen what type of menu you want (there are three choices and each of them are the dashboards of one of the ships in the movie) you can select some of the random lights on each dashboard for a brief menu animation.