A nice find btwn Terms D and E if you have time to kill. I am a regular...they offer massage , as well as facials, manis, and pedis.
I always go for the 30 min back and neck swedish massage in the chair. It's a little pricey at $55 plus tip, but it relaxes you nicely for the discomfort of American's Main Cabin economy seats.
Insider tip: sometimes there is a wait. Call before you go to the airport, and you can make a reservation.