FAST FOOD!!!

I know it is bad for you but there is nothing like the convenicnce and taste of fast food especially when you are late for work or an appoinment! Today I went to one of my favorites! The soft chicken and buttery biscuit is so good! Do you ever wonder how they get that fast food taste? I have a Top-Secret recipes book that is supposed to replicate the taste of a lot of fast food places but i have yet to get it just right. What is your favorite fast food? If you they decided to get rid of all fast food except one chain, what you want them to keep?