DP Dough...
My first impression of this place was not so nice. Fist time I had their calzone, I went to their place to pick it up. The place looked bit unsanitary and I noticed that not everybody was wearing gloves or had aprons.
However, the second time a had DP Dough calzone, I ordered one. And yes, they do deliver to far destinations and work 24/7. So when you're hungry at 3am in the morning, DP Dough is what you should go for.
I know that they have wide selection of calzones. However, I have tried only one kind, the "Ranch Buffer" couple of times. I remember it was pretty good (especially after several beers). I highly recommend trying it.