Scranton, PA region actually has quite a few, despite the city itself only having about 74,000 people or so. Good pizza cannot be bought by the slice or the pie, however, and must be bought by the "tray," which is rectangular in form. A few contenders are:

Revello's (Old Forge original)
Colarusso's (there are now several dotting the landscape...)

along with some other less-notable, but equally delicious places. That style is pretty unique to this area alone, and is apparently an acquired taste.