Nate Robinson has always been one of my hidden favorites... he is flat out explosive off the bench.... he blow up the score board, or he may take his own team out with friendly fire... but I'd take him as a backup.
As an aside, Nate would be a starter on my All Crazy Guy team... along with Birdman and of course Artest, throw in a little Delonte and Deshawn Stevenson... maybe Matt Barnes and JR Smith, KG to round things out....
Birdman
Kevin Garnett
Metta World
Delonte
Nate....
Have Andy Varejao, Barnes and JR off the bench...come on.... you'd watch that team every night... you'd never know what is gonna happen. They may not win much, but teams ain't gonna want to play them.