Super Mario World vs. the Many-Worlds Interpretation of Quantum Physics:
An original video appeared here; a playable copy has not been recovered. Those of you who know me outside of this blog will find that particular juxtaposition of physics and Nintendo very amusing.

Don’t just watch it, live it. Awesome game built on the same principles:
http://www.nekogames.jp/mt/2008/01/cursor10.html
That was great. I noticed though, when one big Mario got hit, they all shrank. Entanglement?
Awesome!