Probably the most gluttonous thing I have ever consumed would probably be voodoo doughnuts. If you're ever in Portland and are thinking to yourself "I've lived a good life, why not go out in a powdered sugar blaze of glory?" Than voodoo doughnuts is the place for you.
They have doughnuts with bacon in them, some with various cereals on top, several kinds of heart slowing glaze, and my personal favorite the NyQuil or pepto bismol doughnut.
http://voodoodoughnut.com/menu.php