Fan Preview of "Two Towers"
Go to the [Scene Selection] menu on disc two and navigate your way to the final page where you'll find the chapter with the [Fan Club Credits]. Move the cursor to the numbers on the far right of the screen, and when it's on "48", press [Down] to make an image of the Two Towers appear. Press [Enter] to view the trailer in full anamorphic widescreen and Dolby Digital 5.1 audio.
MTV Spoof
Go into the [Scene Selection] menu on disc one, and head to the final page where you'll find the real "Council of Elrond" scene. Highlight that scene and press [Down] to find an image of the Ring. Press [Enter] to view the entire clip from MTV complete with an introduction from Peter Jackson.