OK, since num1bearsfan blew this wide open, I'd just like to put in a vote for the fries at SuperDog, right next to McDonald's. You get a box of crinkle cut fries, about 1ft. x 6" for about $2.80. Good with ketchup on or off the plane. A meal in itself if you don't want to have meat or spend much. (I'd say something about cholesterol, but I'm not sure of my ground as to how healthful they are, even so.) I've always found staff there when I went.