pretzels, love the salty and sweet/rich combination
something with real ginger flavor (without all the extra spices that go along with gingerbread), like a ginger and apricot ice cream
It would definitely depend on what else was on the pizza. For example, marshmallow could go well with pumpkin or sweet potatoes if balanced by a savory element (obviously not on a pizza with marinara, but perhaps on an italian style pizza with no sauce); and if mixed with the right spices and perhaps a chipotle tinged sauce, a darker chocolate could possibly pair well with a steak topped or a chili-themed pizza.
SLUfoodie hasn't favorited a post yet.