Rails Day 2006 has begun – 24 hours of coding madness
Above: Courtenay's team hard at work.
If you want to spectate, there's a Campfire chatroom for the purpose, as well as graphs and other information on the commits and svn activity of the participants. The repositories are usually opened up sometime after the contest has finished, so there'll be lots of great code to check out. I'll post again when you can dive in!