Hostess Cupcakes are second best only to Twinkies. Because they are so good, it is only right that they have their own day.The cupcakes have the hard chocolate on top with the hard icing that tops it off. It's chocolate cake is amazing too. The best part is the creamy dreamy filling in side. I usually pull off everything and eat it and save the dreamy creamy surprise for last.

That is the reason why they have there own day. How they got started: [from wiki]

Hostess CupCake is a brand of snack cake formerly produced and distributed by Hostess Brands and currently owned by private equity firms Apollo Global Management and Metropoulos & Co. Its most common form is a chocolate cupcake with chocolate icing and vanilla creme filling, with eight distinctive white squiggles across the top. However, other flavors have been available at times. It has been claimed to be the first commercially produced cupcake, and has become an iconic American brand.