ryg is also a member of the Farbrausch demogroup, which has released some amazing demos. This one is probably the most memorable: https://www.youtube.com/watch?v=Y3n3c_8Nn2Y
They should really teach this up in some computer graphics 101 -- it is crazy how many fringing artifacts you see in the wild. Also, is this the same Duff of Duff's device fame?
Yep. He did both while working at LucasFilm.