Awesome things about Mon Aimee:
a. Kind, knowledgeable, attentive staff.
b. Excellent variety of chocolates from throughout the US as well as tons of international options. (two favorites: Poco Dolce from San Francisco and Eclipse from San Diego)
c. New products appear frequently (exciting for a regular visitor)
d. As other reviewers have enthusiastically mentioned, CAPOGIRO GELATO, dark chocolate flavor. Seriously, the best I've found in the US (...and by that I mean darkest chocolate. It's always too light elsewhere!). We're really lucky they distribute it in Pittsburgh.
My only caveat would be that for items you can find in the grocery store, such as Chocolove bars, you're better off grabbing them at Whole Foods, Giant Eagle, or Right by Nature - you may save about a buck per bar.