1. Perkins - Used to be one of my family's favorite breakfast places, but they closed their Frederick location 4 or 5 years ago. There was still one in Breezewood, PA last time I passed through there, but even that's been a while. Not sure if it's still there or not. I was sad to see them go, they did a great breakfast.
2. Marie Callender's - Common in CA when I lived out there. Great pies, and the chicken pot pie was a go-to.
3. Boston Market - Used to be everywhere around here in MD. They've been hard to find the last few years though.
4. Red Robin - Have a few of them around. Good burgers, hope they make it.
5. Tim Horton's (U.S., not in Canada) - Seen them in PA and north. Never eaten at one.
6. Steak N Shake - More of a southern chain, but they opened a few in MD recently. They have a following, but seemed like just another burger joint to me.
7. Ruby Tuesday - A lot of them around. Salad bar is so-so, as is the rest of their food. Nothing special.
8. Friendly's - Used to be everywhere around here like
@Chad said, I haven't seen one in years.
9. Luby's - Another southern chain, cafeteria style. I used to like them when I lived in TX.
10. Pie Five - Not familiar.