Here is a Quartz Composer / Core Image port of the animated quasicrystals that have been going around recently.
It runs in realtime at 60fps at 1440x900 on my old Macbook Pro.
Unfortunately the video compression really kills this :'(
Kernel source code:
Quartz Composer file:
Loading more stuff…
Hmm…it looks like things are taking a while to load. Try again?