This weekend was the Microsoft Puzzle Hunt. Ordinarily, you'd have to be in Seattle/Redmond to participate, but this year they were kind enough to run a simulcast instance of the game in the Bay Area through the internet.
It was great. The hunt was train-themed. I'd never hunted with any of the people on my team before, but they were all pretty sharp. We started out ranked in the top three, but lost some steam over the course of the day. By 3am, it was just me, Ankur, and Nima puzzling, and we were all pretty tired. By Sunday at 5pm, we were in 9th place out of 29 teams. I quite liked the round 2 meta - perhaps I should get a copy of Ricochet Robots. I also particularly appreciated the "Whistle Stop" puzzles, which were designed for teams to complete together as quickly as they could which usually involved plays on words. The first couple were quite easy and made for a good morale boost. I can't wait for the MIT Mystery Hunt.
Oh, and apparently we humans have also made glow-in-the-dark cats. Pretty cool technique - they use an analogue of HIV for cats called FIV to deliver genetic material to eggs before fertilization.