The greatest thing since sliced bread. Seriously. This wouldn't have worked before sliced bread was invented.
The convection toaster takes warm air and tosses it around your bread, making the sides all crispy while keeping the inside moist. You know what that requires? Slices! Because if you stuffed a whole loaf into a toaster, it would get all weird. The outside would crisp and the upper middle would be all puffy and the inner middle would still be all cold. That's why sliced bread is just so damn wonderful.