Have you ever had cake balls? What's your favorite flavor combination of the cake and icing part?

Somebody once bought me a cake ball maker thing as a gift.. It came with instructions and it looked like a George Forman grill thingy exept it had a bunch of circle things in it and a book of Martha Stewart type ideas...  I chucked it cos I'm no Martha. So no I've never had or made cake balls :/  I don't really like cake though.  Balls I'm okay with.

I've had red velvet with white cream cheese icing injected inside. Gooder than good.