I am an avid reader of this site though rarely have I posted until now. The food at Sullivan St Diner on Sullivan between Houston and Bleecker is amazing. I have had all the NYC burgers, and the burger at this place is outstanding. Additionally, they have homemade pickles that are some of the best I've ever had. My girlfriend had the meatloaf with mushroom gravy which was undoubtedly one of the best I've had, better than Serendipity and better than Cafeteria.
Go check out this place! Get the burger and let me know what you think. You will NOT be disappointed.
On a side note, the Stone Crow on Washington Pl between MacDougal and 6th also serves up a quality burger, better than Corner Bistro, which I think has gone down hill.
Let me know!