This isn't some crazy buffer overflow exploit, or a great remote code execution exploit. With all of Vista's improvements (and there are many), the best way to bring a Vista system into horrible spasms is by holding down Window+E for ten seconds. If you're familiar with the Windows key commands, Window+E will open an instance of Windows Explorer. Open enough of those at the same time, and poor Vista just doesn't know what to do
I would like to point out, however, that while I think this is hilarious, I don't see this as a "[insert OS of choice here] is so much better than Windows" argument. Ubuntu has similar problems (as does Kubuntu). When you smash your system with too many commands, I've seen it just want to take its own life. When I really start slamming my Kubuntu desktop, I get hard locks on my system, which I recently discovered are related to the AMD64 processor getting a bad opcode from the Linux kernel. That bug still exists. However, Kubuntu is worth much more than I paid for it ($0), while a copy of Vista will at least knock you down a hundo...