1. Cheeseburger
This is said to have been a mistake, according to locals in Pasadena, California. A young chef at The Rite Spot apparently burned a burger and used a slice of cheese to cover up his blunder.
Putting cheese on a burger is now the done thing to do. There are so many other toppings to choose from and different sorts of cheese too. Blue cheese is great, as are American cheeses with chillies and tomatoes.