The guy with the Mullet in Ghost in the Shell used something exactly like this.

Time to bust out the Haterade on this shit.  First of all, I've seen these Blast Knuckles described as being anywhere from “950,000 volts” to “1.9 million (!)” volts. Even if these numbers are even vaguely accurate (most police Tasers clock in at 50,000 volts give or take 10,000 volts, and high tension wires typically carry around 100,000 volts), they're missing the point. Doesn't anyone remember high school physics anymore? These high voltage numbers sound impressive … until you take Ohm's law into consideration.

Straight out of Jack Kirby!

wow, i might seriously consider getting one of these. seems more ergonomic than the taser.