Well the short one doesn't look rendered, it looks like high speed camera shots and fruits bathed in liquid nitrogen shattered on surfaces but proly is as well rendered .Maybe hes using some shattering algorithm with a compressed fluid dynamics component,...
or a hardware phys engine for the bits and their behavior.
,you can find doubled textures here and there but he got a big variety in it,anyways looks like a sh*tload of work!
SOund is in HD too,i would like to know the tools and plugins he used for this.
If you compare it with avatar for example nothing is really surprising in regard to feasibility.
Anyways WOW.