So many good pizza being mentioned. When I was traveling the South Hills I would love to stop at Mineos... and Bado's also (Bado's has great beer). I live in Irwin... so I'm loving Vincents. Next time I'm at the dog park, I'll have to check out Lucianos since its just right over in White Oak.
If you're ever near Washington, Pa, the best pizza around is still Osso's. Its right on Rt 18. Next time you're heading to Star Lake... or whatever they're calling it... check it out.
My wife loves the worst pizza in the world. If you're from anywhere near Greensburg, you have to tell me why people like this Joio's pizza. They use sweet pie crust... and its just awful. Its like eating dessert.