For a few days I ran the Blue Screen of Death Screensaver which you can download from Microsoft TechNet. Yes that's right it's available from Microsoft website (who says we don't have a sense of humour). The screensaver works as advertised: it displays a BSOD at the appropriate juncture. However it kept freaking out my coworkers. Each time the screensaver turned on people would freak out and express sympathy for my poor machine. In the end it became too disruptive.
Try it out for a few days and see how it goes in your work environment.