Originally Posted by
Arath
The above points are basically it, as a DPS many of the standard rules hold true.
Get hit capped
This is the top priority for most DPS, you need 263 hit rating or around 8% (if he is a draenei remember racial passive gives you +1%).
Gem for STR
The conversion is the same for the gems (1 STR is 2 AP for a warrior). However STR benefits a warrior more and also benefits from blessing of kings, etc.
Expertise (aim for 26)
While not so important its nice to have. It reduces the chance for his moves to be dodges/parried (and no overpower from dodge, versus the missed attack is not good).
Aim for around 35% critical strike chance
A solid number to aim for as a DPS warrior.
Stand behind the mob not in front of him! Have fun in Naxx hope he enjoys it