FOCS 2010 Tutorial on Geometric Complexity Theory by Ketan Mulmuley, The University of Chicago. This tutorial was the basis of "The GCT Program Toward the P vs. NP Problem," Mulmuley's article in the June 2012 Communications of the ACM, at http://cacm.acm.org/magazines/2012/6/149927-the-gct-program-toward-the-p-vs-np-problem/fulltext
