While giving a final to my DePaul students I started playing with nParticles in Maya. I love the chaos that comes from throwing hundreds of spheres into a collision field, so here's a sequence I created. This is 600 frames at 24fps, hdr/ibl lighting rig, 6 min/fr render time when particles are full in frame, i7-2670QM 2.2GHz. As it happens this type of animation is also a worst-case scenario for video compression. So apologies for the artifacts and I will try to get a true 720p version rendered out.