It depends on what you're looking for (and where) of course, but here are a few of my favorites that are quintessential Miami. Search for any of these places with the search feature, and you'll find good stuff on these places...
Michy's - 69th Street and Biscayne
Michael's Genuine - 40th Street and Miami Avenue (Design District)... also near Pacific Time if you want to split your meal at these two places.
Andu - a new restaurant in the Brickell area - but very interesting and consistently good menu - NW 2nd Avenue and SW 7th Street.
Ortanique - Coral Gables (Miracle Mile)
If you're looking for anything specific, feel free to post, and I am sure you will get some good feedback.