Make sure to use rice hulls so you don't get a stuck sparge. Quick oats are the way to go but they also get gummy. I like the mouth feel but don't like the cloudiness they add. I use them but only once in awhile.
Drinking Oatmeal stout, Mirror Pond APA clone, EIPA
Secondary Amarillo APA
Primary Belgian Dubbel
On Deck Arrogant Bastard clone, Nut Brown Ale