Lady Brianna McBain writes:
"Go to the menu page and click on 'select-a-scene'. Then scroll through until you find the page where you can choose the 'Council of Elrond' scene. Now click on the single asterisk at the bottom of the page on the left side. Director Peter Jackson comes on an introduces an alternate satirical version of the council of Elrond. Enjoy!"
Editor's note: This alternate version is rated PG-13!
Another hidden treat can be found on the second disk, as reported by Lady Aurelia:
"On the second disk of the movie, go into chapter selections, go to the last page, there over to the number listing on the right. Go all the way down as far as you can. At the botton right corner of the screen the Two Towers icon will appear, and you can see the trailer for Two Towers that was shown at the end of Fellowship near the end of the run."