Ess-a-Bagels in Midtown Manhattan, NY. I get the whitefish salad on their onion bagel pretty much every chance I get. Awesome. Photo credit: http://www.flickr.com/photos/summerbl4ck/6487571027/sizes/o/in/photostream/
Ess-a-Bagel Gramercy and Midtown Owned by an Austrian family and open since the 1970s, Ess-a-Bagel hand rolls and boils in enormous pots visible from the (generally quite long) line. The double-fist-sized rounds are dense and could serve two if you're some sort of weirdo bagel sharer.