Ha - well, not as impressive as I would like it to have been, but I just began (last week) my double masters program at Georgia State University in Atlanta, GA - it's an MBA/MHA degree (Masters of Healthcare Administration). It is the only university in the state that offers such a program and it's accredited, which is obviously very important. It's a good program, and minutes from my house - which is a huge benefit.
The most reputable in Atlanta would have to be Emory University for MBA's. They're a private university, so very pricey compared to state schools, but I'm sure it pays for itself once graduation day rolls around. They actually don't offer my program (the joint degrees) otherwise I would have applied. Other amazing programs in the US though are, of course, Harvard Business School in Boston, Wharton Business School at the University of Pennsylvania, and Northwestern (Kellogg) in Chicago - to name a few.