Google co-founder Sergey Brin hijacked Vic Gundtora's Google+ speech at Google I/O to talk about Project Glass, and reveal via video, that his friend was about to jump out of a blimp. He then revealed that the friend was participating in a Google+ Hangout from the Google Glass. Then things got pretty crazy.
What followed, was a team of skydivers hanging out on Google+ from Google glasses, jumping out of a plane, and hanging out all the way down. "Hey Vic, this is a hangout on air," Brin joked.
From there, the hangout transitioned to people biking off of buildings, and climbing down walls, before everyone met on stage at Google I/O:
Now that's how you make an announcement.