These two are my favorites, in terms of imagery and dedication.
From Juli Olson, of Long Island, New York: "We all went outside and began working, some of us bailing in the driveway and some of us building a dam of branches with leaves across the driveway. (Who decided that having a driveway that goes down to a basement garage was a good idea in this neighborhood anyway?) Brittyn was the force behind the dam and it was working, keeping the flow from pooling in our driveway, but it didn't take long for us to realize this was a different scenario from last year's Irene. I have a clear image by the eerie light of the full moon somehow reflecting under the clouds of Brittyn up to her waist in water in the middle of the street as the water was rising." More here.
From the Times: "As hurricane-driven waters surged into New York University research buildings in Kips Bay, on the East Side of Manhattan, investigators in New York and around the world jumped on the phone to offer assistance — executing a reverse Noah’s ark operation, to rescue lab animals and other assets from a flooding vessel." More here. I also love the last line of this one.
And the one that made me sad (mind you, I've read few): the loss of the boardwalk where I took this picture.