Best - Arby's by far, that was my first job and my mouth waters just thinking about the chicken fingers I used to hide in my pockets and the sauce under the counter for dipping, they have such good food for fast food. Whenever I want fast I always look for an Arby's. Expensive thou for fast food.
Worst- Wendy's, there is just nothing good there, nothing special, just stale fries and burgers.
And the comment about kebab is so true. Someone opening up a kebab place in the city would make big bucks. When I went to Europe that's all I ate on drunken nights. I make them at home now. So yummy.
I guess most places have something good on the menu, except Wendy's, Chapotlie is good, fried chicken places, I like them all, they just give too big of portions for even the basic things, I can never finish a meal, where at a normal restaurant I can order an appetizer and be fine.