Bonus Feature:
At the title screen,click the flag outside the window and you get a trivia question with the answer at the bottom.
Reported by: Paul

Bonus Feature:
At the special features menu,click the poster on the center wall, and a film clip plays showing some guys hitting a guy in a spacesuit type costume over and over.
Reported by: Paul

Bonus Feature:
At the special features menu,click the poster on the left wall and the phonograph will play a bing crosby tune. click the poster again and it'll stop.
Reported by: Paul

Bonus Feature:
Go to special features then goto "Characters".Highlight special features on the Characters page and press left to select coffee mug.
Reported by: collector_clif

Bonus Feature:
Go to special features then goto Recipes and highlight the bottom recipe (Mango Bango Leprechaun Stew) and press right to select German Flag.
Reported by: collector_cliff

Trivia:
From main menu goto "Internet Options". The 'Main Menu' at the bottom will already be highlighted, press left to select German Flag.
Reported by: collector_cliff