Decimate the political world and a long list of others in hilarious and unlikely fashions. (Bonus points for ironic ends)

Eg: 

Picking a hardcore Christian (male) politician and choosing "death by vibrator"

*In short, i'd probably be the worst possible candidate for something like the Death Note, because i'd use it because I could. Same way if I was given a button, a gaurantee and told if I pressed it someone would die but i'd get a million bucks.