Here is a preview trailer for SIGGRAPH 2013's Computer Animation Festival.
The Foundry - Competitions at SIGGRAPH 2014
Check out the competitions and prizes that The Foundry have in store for you at SIGGRAPH 2014.
ZBrush SIGGRAPH 2013 Recap
Here is a massive recap of ZBrush's presentations from Siggraph 2013.
Pixologic - SIGGRAPH 2012 Recap Video Series
Browse through this recap of Pixologic's video demonstrations from this year's Siggraph convention.