I can also vouch for both Peter Luger Steak House and Corner Bistro as iconic awesome burgerness.  However, I would also throw in the The Spotted Pig Buger (ok -- I'm just in love with April B!) but if had to eat just ONE burger, it would have to be Daniel Boulud's ultra iconic Original db Burger at his db Bistro Moderne. It's damn expensive but oh my god -- it changed the game for burgerdom all over the world I think!  

 My number one favorite in NYC is the burger at Little Owl. They even make their own buns so it fits perfectly on the burger.  Just outside the city in Brooklyn, Peter Luger Steak House has a great burger too. They only serve it during lunch and is cash only.

My favorite is not fancy but is in my opinion the tastiest - Shake Shack!  There are multiple locations in the city.

100% J.G. Melon!

If you need any additional restaurant recommendations, feel free to check out my New York City restaurant blog (http://wp.me/4iPrh), which is also on Facebook (https://www.facebook.com/TheStraunt) and Twitter (https://twitter.com/TheStraunt).

BareBurger! Organic burgers with exotic meat and veggie burger options. Also, you must order at least two servings of sweet potato croqs.

Mel's Burger Bar!!!!!!!!! Check out their menu, the burgers are incredible, they offer a range of different Fries and the Thickshakes alone are worth the visit http://www.melsburgerbar.com/. It is right nearby by Columbia University and the Seinfeld Diner Tom's Restaurant so there is more to see on the Upper West Side of Manhattan.