A rite of passage that many fellow geometers have gone through: I will be hanging out with the only group of people who can hope to get both Turing awards and Academy awards (take that, C. P. Snow).
I go to do
SIGGRAPH gets over 2,000 attendees; considering how we do cartwheels at SODA when we get 300 folks, I expect significant culture shock.
Update: Did I say 2,000 ? I mean 20,000. Sigh....