Finished this race today, it was an absolute blast. I'd highly recommend it to any runners/multi-sport/cross-fit athletes out there if it's in your area. It was something really fun and a bit different than the typical running races I do.
I did the 5k Sprint version, hoping to do the Super Spartan (~9 mile version) in February. Ultimately, on to the Death Race.
For those interested, my race report is here:
http://sweepingthegarden.wordpress.com/2010/12/12/spartan-race-121210/
Death Race (the big, ugly brother of the Spartan series):
http://www.youmaydie.com/
Spartan Race:
http://www.spartanrace.com/