First, there's this local place in Columbus - Jenni's Ice Cream - and she makes some of the coolest not-every-day flavors. Her Strawberry Mascarpone Ice Cream is the best. For those of you that don't know, Mascarpone is the light, light dessert cheese used in Tiramisu.
Second, Haagen Daz Macadama Nut Brittle is really good too. Unfortunately, you can only get it at a Haagen Daz store.