I live in the San Francisco Bay Area, and a coworker and I will be in Philadelphia for about four days at the beginning of June. As a first-time visitor, I'd like to hear what's especially good to eat there and good places to get it. I've read about cheese steaks, of course, but I'm sure there are other local specialties and various good things to seek out too.
We will be staying near the Pennsylvania Convention Center, but we'll have a car.
We enjoy all kinds of food--no particular prejudices.
Thanks for any responses to this very broad, general query!