Center City Restaurant Week is underway, and we took a look at our top 10 most popular spots in Philadelphia to see which places are participating and still have reservations left. If you haven't checked out these restaurants yet, with $35 three-course menus offered through October 12, now seems like a great opportunity to go. Just be sure to call ASAP, as some have very few bookings available. Can't find a reservation that suits a time you need? There are always alternative deals as well.