Stuart's Paint & Body I've heard is good. High end cars mostly.
http://www.stuartspnb.com/
There's another place I've used that does great body work, but I'm not on fire about their paint work. At least the work for me they did seemed a little bit blotchy. I've read elsewhere online they're among the best. (They did my 996 conversion.)
German Technologies, Inc in Euless
http://www.google.com/local?hl=en&lr=lang_en&q=german+technology&near=Euless,+TX&sa=X&oi=locald&radius=0.0&latlng=32817778,-97140556,6531390961247874514