Highlight the Lion's Gate logo on the [Main Menu] and press [Enter] to access bonus movie trailers. The reel is closed out by director Eli Roth coming on screen congratulating you on finding the easter egg.
The disc contains a series of menu time-outs that you can find in the [Scene Selections]. Simply go there from the [Main Menu] and don't do anything. Just wait until the menu has looped a few times. Eventually the party-obsessed cop will show up and treat you to a brief clip. Try various [Scene Selection] pages for different clips, and if you pay attention to them you will realize that these clips actually create a small story.