YES! If you are doubting your choice, you must say YES! Cash only, typically a wait, but you gotta go! MUST MUST MUST.
We went on a Sunday morning pretty early--like 8 AM or so and we had to wait. But they move quickly and have a TON of space. It was kinda loud, but not horrible--definitely a diner atmosphere. The tables were close together, but it wasn't to the point of being uncomfortable.
Enough about the atmosphere, the FOOD. Everything was FANTASTIC. We ordered an array of menu items and everything was great. Make someone in your party get the crepe-style hotcakes because they were soooo yummy! I had the banana and chocolate chip ones and it was just enough toppings, but not too much. My brother-in-law had a hash and I tasted it and it was to die for. Yum yum yum! The potatoes in there just melted in your mouth. You must get the potatoes also! So good. I can't wait to head back to Pittsburgh to have breakfast here again. Worth the wait!