Here are a few more:
In the Zona Colonial for Italian food in a gorgeous setting, La Bricciola. On Merino.
On nice nights most table are in an open air courtyard.
For a try at "tipico" dominican food, try "Conuco" which is one block behind the Jaragua and the Melia hotels.
I like the Brazilian Rodizio at the Intercontinental.
For OK food in a natural cave, you should check out Meson De La Cava, and then go dancing at Guacara Taina.
Of course I spend most of my nights at Tony Romas, Fridays, Champions and the new Outback! I'm a meat and potatos kind of guy!