Didn't get anything of Brooklyn on this trip except for the bridge shot already posted. Otherwise, from top to bottom:
Queens - Silvercup Studios in Long Island City. When I was young Silvercup was the major brand of white bread (which everyone ate) in NYC. When our family drove back to Sunnyside on Sunday nights after visiting my father's family, the air would be full of the aroma of fresh baked bread as we passed. Now it is an enormous film, photography and television production site.
Manhattan: a halal street food trailer outside the Staten Island Ferry terminal. Street food in the city used to be mostly Hebrew National kosher hotdog carts. Now things are more ecumenical. Note the worker wearing the soccer jersey of the Argentine (and therefore presumably Catholic) Lionel Messi.
The Bronx: nothing needs more explanation. I went to high school in this borough.
Staten Island: floor mat on the ferry.
NYC political nomenclature is confusing. There are five boroughs: Manhattan, Brooklyn, Queens, The Bronx and Staten Island. But each of them is also a separate county of the State of New York, sometimes with different names. Manhattan is New York County. Brooklyn is Kings County. Staten Island is Richmond County. It's just to confuse the tourists.