Insert DVD 1 and allow the credits etc. to load and the main menu to run. When 'Select an episode' appears hit select to get to the episode selection menu. Once the Episode select menu is running, hit the TITLE button on your remote to get back to the main menu.

Looks the same as before, but after about 15secs or so you'll hear a telephone interview between Chris Morris and Peter o'Hanrahahanrahan who is supposedly reporting from the World Trade Center as they're collapsing ...

... and who as usual is lying through his teeth ;-)