Nate Ritter and I will be attending Mashup Camp 3 in January. If you have any interest in mashups, public APIs, or the future of the Web, this is one event you can't possibly miss. The first two were the best (un)conferences I attended this year, and this time we get to feel the MIT vibe on top of it all.
We will also be presenting the Eventful API at Mashup University, the day before Camp starts. If you'll be around that day (even if you can't make it to the Camp itself), sign up for Mashup U and see our talk. I promise it will contain at least one robot, one pirate, and a whole bunch of monkeys!