Monitorama was a two-day conference/hackathon that focused on tools and practices for monitoring/managing complex web applications and systems. The first day was 12 30-minute sessions from a variety of experts, while the second day had 6 more in depth workshops. You could also participate in a hackathon the second day, and I would guess about 30% of the people did that while 70% attending the workshops.
graphite / statsd