I remember reading some stuff about Killer Joe upon it's release here, and if I recall, I think they were mentioning McConaughey's performance as award nomination worthy.
Killer Joe got a pretty limited release over here aswell, from what I'm aware of. Playing mainly at the arthouse type of cinema. I missed it, but my parents actually caught it at their local, I think they really enjoyed it. In fact, when I think about it, they regularly visit their local independent type cinema. Couple of avant-garde indie kids at heart. Crazzzzzzy.