Our family watches this show every week. It brings back so many wonderful memories. Not just for the time period and the music (DH and I grew up in that period -- we were JJ's age), but because we lived in the Allentown/Philadelphia, PA area where the story takes place. And my DH is a graduate of Temple University!
They often refer to familiar schools, locations, food, etc. In fact, the waitress that JJ sometimes dates (can't remember her name) said on one episode that she was from Allentown! I even knew someone once who was on American Bandstand as a regular dancer.
Also, the actress who plays Meg is from Tampa, where we live now.
It's a wonderful show and we also hope they renew it!