I remember when almost every videoes on youtube that was made by kids, had one particular Linkin Park song no matter what the video was about. It could be about historical wars, video games, movies, half naked chicks, you name it!
It didn't matter if the videos contained sad scenes or hilarious ones. They just had to use it even if it didn't fit at all. And damn, those people got pissed off if you said something politly about how boring it is to hear that song all the time.
(and yes, i can't remember the name of the song...)
Now it seems people have started to use one song from Disturbed instead...