Step 1: You gotta be Google.
Step 2: Post a single video on YouTube that conveys a concept and ask for submissions that elaborate on it.
Step 3: Watch the video spread virally around the world.
Step 4: Wait for the responses to come pouring in.
Step 5: Edit them together into one video.
Step 6: Disco. You have an original, entertaining and collaboratively created video promoting Google Gmail.
Google recieved 1100 clips from users in 65 different countries to create this video.