Lecture on Tilings given by Prof. Richard Stanley

I have found slides of a public lecture on tilings given by Richard Stanley on July 16, 2004.
Richard Stanley who is currently the Norman Levinson Professor of Applied Mathematics at M.I.T. was named Clay Senior Scholar at the Park City Mathematics Institute (IAS/PCMI) program on Geometric Combinatorics (July 2004).
Perhaps, almost everybody interested in combinatorics read his "Enumerative Combinatorics" vo. 1 and 2 (at least, come chapters of it).
Now he works on a book "Hyperplane arrangements". See, a draft "An Introduction to Hyperplane Arrangements"(46 pages) or Stanley's lecture notes on Hyperplane Arrangements (22 pages)