I've got to make the trip to try Sonny's Gelato. So far the best I have tried in the U.S or in Italy, for that matter, is at Vaniglia e Cioccolato at 15969 Pine Blvd in Pembroke Pines. From the reviews it sounds like Stefano (at Vaniglia e Cioccolato) and Sonny have a lot in common.
Best Gelato Fort Lauderdale and Palm Beach 2011 - Sonny's Gelato Cafe
You know a gelato restaurant knows its shit when Sylvester Stallone has gone through the drive-through. Sonny's Gelato Café in Boca Raton is within walking distance of Florida Atlantic University's main campus and apparently within driving distance for "Rocky" to feed his habit. The popular gelato café features more than 40 flavors on its menu. When asked to name the most popular one, staffers couldn't pick and instead spouted off flavors like banana, Nutella, and peanut butter. The family-run business also serves cakes imported straight from Italy, plus panini sandwiches and subs for those craving an actual lunch.