Spontaneous
Keeping it simple, perhaps utilise 'word of mouth', and get various people to send in a few clips of the boys and girls at work, at various locations of the world. Keep it simple, without any need for costumes, or play acting. Shoot on digital video.
Ask them to include some lip synching to a song (such as the Status Quo legendary song), and then get a Guru to chop it all up into 3 - 5 second clips.
Then you would have variety in locations, quality, faces, jobs, and maybe a few good laughs as well.