I've seen plenty of dessert tables that feature cakes and donuts. I've even seen donuts stacked to resemble tiered cakes, but I don't know if I've seen a cake covered in donuts before. This one by Sweet and Saucy features iced donuts in subtly different shades of orange.
Be sure to check out this and this other previous post about creative dessert hybrids.
images by Gabriel Ryan Photography via Camille Styles