Bewitching applets

Many of the applets at bewitched are beautiful, but
the shortcut wins the prize. It’s visual treat that keeps you watching till the very end. Incidentally, the guy behind the work (Martin Wattenberg) also does the SmartMoney Map of the Market visualization, which is an honest-to-goodness jewel of interface design.

Along the same lines as the site, here are some of my favorite visual dynamic toys:
Motion Sketch and
Gravilux, both by Scott Snibbe, and the ever popular