1) I give you Shhh cards.
2) I give you “[the granddaddy of all quantum wierdness](http://video.google.c om/videoplay?docid=-4237751840526284618&q=quantum)”.
This is a stunning little video that’s certain to make your head hurt, but is highly recommended viewing. I’ve just watched it twice! I found it via [digg](http://digg.com/science/Amazing_Google_Vid- Quantum_Physics_Double_Slit_Experiment), which I’ve heard an awful lot about but haven’t really paid very much attention to. Until now…