From the main menu, highlight "Play" and press up to highlight a gem on the top of the screen. Press enter to go to a new menu. Here you will see eight characters from the movie. Click on each one's head to hear a quote from the movie. Also, from within this menu, highlight "Main Menu" and press either left or right to highlight a gem. Pressing "Enter" on either of these gems will give you additional quotes from the movie.
Reviews: DVD Talk also has a review of
The Princess Bride: Special Edition by Aaron Beierle.