Denny's is my favorite hang out spot. Open 24/7, and located near one of our local malls, this is THE place to go when you just wanna chill with friends. The food is cheap, but definitely good for what you're paying for. Breakfast is all day, of course, and they're cool with you swapping side dishes for other options. I do wish their soup was available longer though, living in the North East, you could always go for some soup on the cold nights.
All in all, would recommend.