Stuffed Cupcakes "3D Cupcakes"

I like to call these cupcakes 3D Cupcakes!!! Not only is it cake topped with icing, but they are also stuffed with cream, fruit filling or whatever else you want!!! These cupcakes I made for Christmas 2010, and they were gone within a matter of minutes of hitting the table. Below are chocolate cupcakes stuffed with Strawberry cream and topped with Strawberry buttercream. Also, vanilla cupcakes stuffed with blueberry cream and topped with blueberry buttercream!!!! So yummy!!! I am addicted to filling cupcakes. I will find anyway possible to turn a "regular" cupcake into a 3D stuffed cupcake. What should I put into my next batch?