Kellogg's came up with the brilliant idea to "Mash up" some of their most popular cereals and sell them by the box. The result? Pure Genius! The latest rendition combines Frosted Flakes with Apple Jacks and it's a Greeeeat concoction that will not only have your kids doing the happy dance, but grown up adults too! The biggest question is...what's next? Oh, and "what's your personal favorite?"