ID:183223
 
Some people have too much time on their hands. Sometimes this leads to some interesting creations, like a custom Super Mario World stage that plays by itself.
http://youtube.com/watch?v=uHln6HPT_Qg

If that's not good enough for you, how about an autoplaying level that syncs to some music?
http://www.youtube.com/watch?v=C3MT6Wi3Kp8

If you'd like to see more of those...
http://www.joystiq.com/2007/08/22/ dont-move-hacked-mario-world-levels-play-themselves/

Or if you prefer focusing more on the music itself, let's enjoy some Mario Paint.
http://www.youtube.com/watch?v=O-YPNoQWpGg
http://www.youtube.com/watch?v=kIrsJFEb7pE&NR=1 (My favorite)

This one has a small bunch of other videogame tunes played the same way.
http://www.youtube.com/user/TomBobBlender

Enjoy. :)
o.o
Holy crap those are awesome!

The Mario auto-play level synced to the Haruhi Suzumiya theme was especially cool... And the Dr. Wily theme in Mario Paint was highly impressive...

I miss Mario Paint... :(
I spent the last two hours looking at these videos.

Now I really want to play Mario Paint, but I can't find my mouse! :(
hooray for hare hare yukai
In response to Maggeh
These are amazing. I even showed my parents and they were like.. WOW! >.>