Hello, I'm moving to Philly for grad school next week and my parents are helping me move in. I would like to find a few casual and reasonable places to eat with my parents while they are here. We don't really like Mexican or French. I'll be living in University City, but we can definitely go downtown. Are there any places you'd recommend in Rittenhouse Sq that fit the bill...cheap, casual and yummy food? Also, they have only been to Philly once, for a day, about 15 years ago, so even this is by no means a site seeing trip, is there a cool or unique area to eat in? My Dad's an architect so a good restaurant in an old federal building would be cool.