Did the 2010 event, the 2011 race is on June 4th.
I'm sorta addicted to these obstacle course races, and thought that Ruckus was the best. No lines, no waiting, by far the biggest and best obstacles, and it was a total blast.
If you're in New England I'd highly consider this event! I also have a team going with some CF buddies, so drop me a line if you are interested. The website is www.RunRuckus.com