There's probably not much to say about Pamela's at this point, but simply put: in my experience this is the absolute best breakfast in Pittsburgh.
We tend to frequent the Millvale location but I've been to them all over the years and I always order the same thing, The Big Lincoln (or the Hangover).
Two eggs over easy, sausage links (my absolute favorite), lyonnaise potatoes, and two crepe style pancakes. I stick with plain, but the stuffed versions with sour cream and brown sugar are great too.
My wife loves their spinach and feta omelette with rye toast.
Friendly staff, quick service, and great prices. You'll have to wait during most visits, but it's rarely more than 10 minutes at this location.