1) Open command prompt
2) Type in telnet towel.blinkenlights.nl
Apparently this was made in the early 1990's. Its only 'A New Hope' but its still freaking awesome.
Some guy must have had like no life at all to spend his time doing this.
If you are on vista or win 7 you need to enable telnet, somehow. Or you can try typing 'o' after telnet.