Sorry to hear this. My local Denny's is one of the best people-watching venues around. I can nurse a cup of coffee for hours (and outrageously overtip the server) and watch pretty much every stripe of humanity come through the doors.
Waffle House is good for this too, but Denny's was the first.
What's the deal at Waffle House where the waitress goes to within 7-8 feet of the cook and yells the order at him?