I have noticed this guy for (probably) years on the Gourmandises video. Everybody in the audience is clapping and dancing, and this guy just stands there for the entire song, almost motionless. It kills me.
This shot is from 0:53, but he can be seen three or four more times in the exact same location. A few other times are 1:06, 2:26, 3:16.
The video link: