Outtakes
Select the "Color Bars" option at the main menu. Remain at the test screen until the outtakes begin.
Hidden options
Start the movie and advance to the last chapter. Allow the ending credits to complete, then select the "Special Thanks" option. Advance to the second screen, then select "The Pizza Guy" option to get to a "Loopholes" screen. From here, you can view the trailer from Big Helium Dog or choose to hear a second commentary track for the movie.