I had a massive craving for a burger and fries today and decided to head over to the Square Diner, on the corner of Leonard and W. Broadway. I hadn't been in before, but from the outside it's total classic diner, so I figured it couldn't be too bad (being originally from New Jersey, I have a serious soft spot for a good diner). For just under $6, you can get their burger deluxe--a good, basic, greasy diner burger, which comes with pickle, lettuce, tomato and more fries than I could handle (had to dig the burger out from beneath them). If you want just the burger with no lettuce, tomato, or fries, I think it's under $4. Nothing gourmet, but it was a good, satisfying burger, and for this neighborhood, the price was more than right.
A woman sitting in a booth near me was having a club sandwich, which looked really good, too. I'd imagine if you stuck with the diner basics here, you'd do fine. They're open from 6am, so I'll have to check out breakfast as well.
The health inspector happened to be in and was filling out his paperwork in the booth across from mine. From the eavesdropping I could do, sounded like the largest problem they had was a missing "employees must wash hands" sign. I can live with that.