sorry, i should've said.
knockback already exists and a few DG's have it(though can't think of an example skill now...mines?) the only thing i can see it does is send minions flying, but they are already dead at that point so it seems a little useless. (?)
piznit - as i understand it, this isn't applied to DG's.
Ed - stuns are called stuns.
nice answers all the same.