The "Video Essentials" disc is known for its high quality content, stressing and checking every bit of your video and "Audio Setup". We just came across another feature however, that let's you see if your player is working correctly. If you press the "Angle" key during the opening sequence of the disc, you can switch between seeing Ludwig Van Beethoven either from the front or the back.
All easter eggs were generously submitted by SirDonk