I've attended SIGGRAPH for a while now, and have found that I don't really like their scheduling solution. I prefer to use Google and Apple's calendar apps for various reasons. This has been possible before because a blog called skitten.org has made available iCal files with the schedule data. But this year they haven't been able to put them together.
So I did! I scraped the data from the online scheduler as of Tuesday, July 19, and parsed it into the following iCal (.ics) files. Download and import them into your favorite calendar app, or do whatever else you like. I make no guarantees about the accuracy of this data -- if the schedule is changed, these files probably won't be updated.