Same deal here. At the end of the presentation, Semmelhack did his quick-and-easy demo, swapping between modules to make a motion-sensing camera, a GPS alarm clock, etc. When he explained that the GPS alarm clock was the invention of a train commuter who kept sleeping through his stop, everyone laughed appreciatively. When he revealed that every module has its own IP address, and that as a result you could conceivably network together the functionality of your friend's GPS, your other friend's camera, etc, people gasped like startled schoolchildren. When he took the crowd's picture and it instantly appeared on the Internet via a projected browser behind him, the crowd screamed and threw its hands in the air.