I can't eat them any more, but I do remember enjoying "onion rings" as an alternative to "french fries" (chips?) with hamburgers. However, looking at them now they do seem dreadful.
I once (by accident) ordered a hamburger that had a fried egg in the sandwich where the ketchup and mustard would go. It tasted OK, but I don't think I will do that again. When I looked at the menu it did state there would be an egg there, I just didn't believe when originally reading it that any one would do something like that and so I unconsciously ignored the information.