I can't make it due to scheduling conflicts, but the Startup Weekend in Boulder begins tonight. The idea is for a group (a few dozen) to start with an idea this evening and work like mad until Sunday evening to turn that idea into a "thing".
I'd bet on some red and bleary eyes come Sunday night and Monday, but it should be a lot of fun and a great experience regardless of the business/product outcome.
Good luck, gang!
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way, shape, or form. Seriously.