My wife and I love some Off The Hoof burgers in Arlington. She oftentimes orders the Buffalo burger and I usually get the Kobe or Black Angus burger. Good food and free drinks if you bring back the plastic 24 ounce cup they give you with each order. We have several of the cups at the house, but always seem to forget them. 
http://offthehoofburgers.com/
http://offthehoofburgers.com/