When I was a teenager, I went through a ketchup and minced onions on my hot dogs and hamburgers phase. Now it's yellow mustard, sweet pickle relish, and sauerkraut on the hot dogs. Rarely use it on burgers anymore, preferring lettuce, tomato, onion, and mayo. I can't remember the last time that I had French Fries (bad experience at a greasy spoon), but when I did partake, it was ketchup on the fries. I still use it on scrambled eggs sometimes, but usually I use salsa. I concur with Greger's meatloaf preference, but also would add sweet peas.