Perkins was my favourite, though sadly only discovered on my last day, so i'm very excited to go back and try it again.
The IHOP was good too and they did a deal where you paid a little extra for some kind of charity, but they gave you a free orange juice and something like $5 off your next visit, so if you went again you actually saved money.
A friend of mine goes every year with her family and they love the Ponderosa. It's a huge buffet, though it's not just breakfast type food, they did steak and fresh baked cookies, jelly and other interesting and yummy foods.