I have always loved spontaneous, group grooviness. Granted this couldn't have been spontaneous, but it certainly made me happy. EVEN BETTER, go to YouTube and hit the HQ button on the bottom on video for better quality.
UPDATE: Apparently not original, but better than the original commercial for T-Mobile in England. Even the commercial makes me smile. The version in Antwerp was for a reality show attempting to cast the role of Maria in a Sound of Music revival.