"I think Chad Billingsley has good stuff but gets rattled I think he would be good coming out of the pen. Any thoughts?"
If he gets rattled then the worst place for him would be in coming into tight late inning situations, sometimes with runners on base.
Aside from his obvious talent, but diminished by ADD issues, I think he also has the best personal grooming on the team. His image on screen is a nice relief from the scraggly hair and tattoos sported by so many players today.
I really haven't paid any attention to his back side or nether regions.