I was killing a few spare mins tonight and decided to switch on mythbusters. Much to my surprise I noticed that they're featuring G-gnome's WMD mod for ~2seconds of show's intro - specifically this was S08E11. I thought that was pretty cool, if not a slight rights violation. *j
http://forums.bit-tech.net/showthread.php?t=189627 I'd guess someone wanted a cool looking bomb (obviously real warheads don't have huge LED countdown displays), Google image searched WMD and just copied what they found.