This is it. My favorite in the Pittsburgh area.
I moved out of the area for 10 years and this was the first meal I had back. There was a table of Italians speaking Italian behind me - how much more authentic can you get?!?
I bring all of my out of town guests here and not one had been left disappointed. My recommendations are to order the mozzarella carozza (or however it's spelled) and then one of the specials. If you aren't into a special, you'll be fine - order off the menu. But the specials are typically amazing.
When my better half was living 4 hours away, he drove into town and I made him get back in he car to go here. Instead if complaining, he asked if we could take his parents next time.