SIGGRAPH users meeting
August 5th at about 4pm there will be a bit of a formal/informal (not open bar) user group meeting downtown near the convention center.
For now it looks like the JW Marriot will be the location. The Pool Bar. If this changes I will post it here when we know.
More can be found here http://forum.mentalimages.com/showthread.php?10127-mental-ray-at-Siggraph-2012