I had a bent rim on my Crown Vic that was slowly leaking air (you know you must have hit a nice pothole when you bend a wheel with 225/60/16 tires...), and had it fixed at Rim and Wheel Works.
http://www.rimandwheelworks.com/history.html
It is kind of in an industrial-looking area, but they were nice and the rim was fine afterwards. They seemed to be a family-owned joint. Apparently they are also a Tirerack sponsored installer, if that makes a difference.