In addition to numerous fast food chains, Delaware County has some really great local fast-food joints. One of my favorites is Zac's Burgers. The fast food haven has grown tremendously in popularity in the past 10 years or so, opening 6 restaurants in the area.
They specialize in burgers - think Wendy's, but better. Sure, the price is a little higher, but you just get the feeling that they put a little more TLC in their burgers, and use fresher ingredients.
Plus, these guys have FANTASTIC milkshakes. It's as if they invented them.
What I'm trying to say is that if you find yourself in the Philadelphia area and are not in the mood for cheese-steaks, maybe you should take it upon yourself to find Zac's, and have a burger. You can thank me later.