Fancy This - A Hidden Star War Movie in your Windows XP!
This is so cool! Microsoft hid a version of Star Wars done entirely with ASCII in the Windows XP operating system. You can try this yourself by going to Start / Run and type: telnet towel.blinkenlights.nl Check it out!
If you don't have Windows XP, you can also check it on Youtube:
http://www.youtube.com/watch?v=kdhrE5RMDfQ
http://www.youtube.com/watch?v=vxW2EePW8qA