Your one-stop shop for SIGGRAPH 2013 links is brought to you by the inestimable Stephen Hill: go here now.
My small contribution to the cause is hosting the talk “Unity: The Chase – Pushing the Limits of Modern Mobile GPU“:
I had a good SIGGRAPH myself. Talked with lots of people, saw some worthwhile presentations. My favorite was Marco Salvi’s, about PixelSync. “Programmable raster ops” doesn’t sound like a big deal on the face of it, but Marco’s talk pointed out all sorts of interesting uses: RGBE encoding, voxelization, and a bunch of others. His slides should be up on the “Advances in RTR for Games” site soon. In the meantime, there are blog entries here, here, and here - all with demos and more.