Heh...the net admin guy at my last job liked to occasionally get out a hampster dance MP3 and just BLAST it, usually first thing in the morning. It kept things interesting, in any case.
I used to work with a guy... he had an MP3 of a song used on a Volkswagen commercial; this was a commercial from several years back where a couple were riding in their VW with this song (instrumental only) playing, and they begin to realize that everything is happening in time to the music... windshield wipers going from side to side, direction signals flashing, etc. Anyway, this guy had that music on a loop and played it all day long, over and over and over...
I was very glad that I didn't share an office with him.