This year, (2011), is the 6th run. Someday I'd love to do this, (and of course Shasta). Probably too much money to take a bus there from here, but we can all dream. Looks like a bunch of LEAKOILERS. Here's a little clip about it from the 4th run in 2009 from YouTube:
http://www.youtube.com/watch?v=me_SwTkF ... r_embedded
And here's their site...
http://www.eireball.com/