Go to the Special Features menu and wait. A few seconds later, the Dr. Evil logo will appear in the center of the screen. Click the logo to access the hidden features, including a 20-minute Dr. Evil mockumentary and a history of other evil plans for world domination from past spy films.
From the main menu, go to Special Features. Watch Austin do his thing, and wait again. After a short time, Dr. Evil's spaceship will fly past, and leave behind the Evil symbol. Click the symbol to access a "Comedy Central" special about Dr. Evil.