The Max Planck Institute has guided a particles (3Dthingie) based simulation of some Cosmic scale event:
witness it (you need a fast connection to download the avi's. But there are also images):
http://www.mpa-garching.mpg.de/galform/press/
witness it (you need a fast connection to download the avi's. But there are also images):
http://www.mpa-garching.mpg.de/galform/press/