Looks like this thread is dead, but I had a great time reading the posts and thought I'd share my ratings as well.
Chick-Fil-A - 10/10
I love this place, even though I worked there for 1.5 years. The chicken is always delicious, Polynesian sauce is amazing, and their sweet tea is the nectar of the gods. You really can't go wrong with much here, and I know from my work experience that most CFAs are scarily dedicated to providing ultimate service and quality in their junk food. If you don't mind the calories, those milkshakes are amazing.
Little Caesar's - 3/10
Their pizza tastes like a cracker with cheese on it.
KFC - 2/10
Even though they have veggies, everything is cooked with this horrifying grease that scares me to death. I have never seen a clean KFC. Also, the double down is disgusting. That said, it's chicken, so it can't be all bad.
Pizza Hut - 7/10
Generally satisfying pizza, and their other food isn't so bad either. Not my favorite place, but I'll eat there with friends.
Taco Bell - 10/10
Almost as good as CFA. Soft Tacos are cheap, filling, and delicious. I also like the quesadillas. Don't know what sauce is in them, but it has me hooked.
Checkers/Rally's - 5/10
I have never eaten a meal here, but their fries are great.
Panera - 2/10
Awful wannabe hipster lounge. Their bagels are pretty good, though.
Wendy's - 7/10
Generally solid, but it really depends on the store. Sometimes their burgers are never cooked right, sometimes they're amazing. I've always liked their fries, and frosties seem lighter than most fast food desserts.
Dairy Queen - 5/10
Only the ice cream is good, and it's not as good as Friendly's, Ben and Jerry's, or even Chick-Fil-A's.
Sonic - 6/10
Drinks are awesome, food is all right but ultra-greasy.
Domino's - 8/10
I thought they were just BSing about changing their pizza formula, but they weren't! Wow, it's actually really good now. Used to hate Domino's, but now I can dig 'em. They still deliver too, unlike several other pizza places.
Hardee's - 4/10
Eh, they aren't bad, but decidedly middle tier.
Subway - 3/10
What people see in this place I will never know. Their food is NOT any healthier than the average fast food. Bread always outweighs everything they put on the sandwich, and said stuff tends to be flavorless.
McDonalds - 2/10
They get a point for serving southern-style chicken in the north (one of the things I miss most when I'm up there) but otherwise their food is toxic.
Quizno's - 6/10
Pretty good sub shop, nothing extremely special though.
Dunkin Donuts - 1/10
I swear they just rub transfat in to everything. Their drinks aren't even good. I have heard the coffee is good, but I am not a coffee person.
Papa John's - 5/10
Middle tier pizza.
Arby's - 4/10
Way overrated. I will never understand what people see in this place. Their menu has no focus, and I can never figure out what their specialty is. Other places have better chicken, beef, and side items.
Burger King - 8/10
Wow, surprised this has such a low rating. I'd say I have a good experience at BK most of the time, but I guess I could just be getting lucky. Icees are a big plus. When I want a giant, fattening sloppy burger, I'll pick BK 9 times out of 10.
Krispy Kreme - 1/10
Sugar overload
White Castle - 2/10
All right, but not as good as Krystal.