Preheat Grill For High Heat. In A Large Bowl, Mix Together The Ground Beef, Cheddar Cheese, Horseradish, Salt, Pepper, Garlic Powder, And Bacon Bits Using Your Hands. Shape The Mixture Into 4 Hamburger Patties. Lightly Oil The Grill Grate. Place Hamburger Patties On The Grill, And Cook For 5 Minutes Per Side, Or Until Well Done. Serve On Buns.