Typical tourist.
Brooklyn is pretty damn awesome. Best pizza in NYC is in Brooklyn. In 2012, the New Jersey Nets will be moving over to Brooklyn. Coney Island is in Brooklyn. Brooklyn has more of the parks, beaches, academy of music, etc. Just stay the hell out of East New York.
Only reason to visit the Bronx is to see the New York Yankees play.
Queens is probably the most diverse county in the world. Little Egypt, Little Arabia, Little India, Chinatown, Italian/Greek, West Indian, you can find a lot of stuff there. However, sports wise, there's nothing to see other than the US Open because the Mets are gonna suck this year.