Imagine if you were trapped by a horde of zombies, The lead zombie is a guy you used to work with, and he was kind of a jerk even then. That's what this song/video is about.
This is a music video for the Jonathan Coulton song "re: Your Brains". Jonathan makes his songs available online (www.jonathancoulton.com) via the Creative Commons license, which enables projects such as this video.
The song at the end of the video is "Mandelbrot Set", another great Jonathan Coulton song..