This looks quite interesting: a powerstrip that you can control via a
webbrowser and/or telnet so you can remotely powercycle crashed
systems. Iit will even ping IP-numbers and flick a switch if a system
stops responding all by itself. Neato. Not cheap, though.

http://www.dataprobe.com/products/power/powerstrips/ibootbar2/index.html

Best,
Zip

Zip Boterbloem
Media Mechanics
Zwaluwstraat 54
2025 VR Haarlem
The Netherlands
+31627014758
zip@knoware.nl