At Boomershoot 2005 (last year) we blew up a computer. Watch the KING5 Evening Magazine video to see it. Someone else blew up their computer and made a really nice video of it as well.
The View From North Central Idaho
Ramblings on explosives, guns, politics, and sex by a redneck Idaho farm boy who became a software engineer living near Seattle.
We did some decent computer ballistic testing along with a nice monitor blowup last year:
http://anarchangel.blogspot.com/2005/06/team-infidel-rides-again.html