There is a complete hidden section on this MGM disc. Select the “Special Features” menu and press the left arrow on your remote control. This should highlight the Spaceshuttle and when you hit “Enter” the shuttle will launch. It will take you to a section supplying background information about the spaceshuttle in the movie. Also, if you keep the main menu running for a little while, you will be able to see the Spaceshuttle destroy the little satellite circling the Earth.
Note: This hidden feature can only be found on the original DVD release of this film and is not part of the re-released Special Edition.