Believe it or not, Pop-Tarts turned 50 in September and our favorite toaster pastry is still selling -- and tasting! -- better than ever. And with every great product, there's a great backstory. We did some digging into Pop-Tarts and found some interesting factoids. With some help from the folks at Kellogg's, we found out about the toaster pastry's somewhat controversial beginnings to the fame it enjoys now as a favorite on-the-go breakfast delight. Here's what we learned: 1.