Springfield, Illinois is noted for its "Horseshoes", which consists of some type of meat (typically a couple 1/4 pound burger patties) sitting on two slices of toast. This is then smothered in french fries and then buried in a thick cheese sauce. They are popular as hell here and you cannot go to a bar without seeing a fat-ass wolfing one down.
Then there are variations such as the "Breakfast Horsehoe" - Three eggs and some type of meat (bacon, ham or sausage) on toast (or biscuits), smothered in hashbrowns/onions and then buried in sausage gravy.
Personally, I find them to be disgusting and have no interest whatsoever in eating one.