Well, here is an interested couple that I got to make recently.
They wanted a traditional cake and a crazy zombie cake, but they didn't want to have a separate groom's cake.
Instead, their cake was divided in half- one half was frosted in white, while the other half was frosted in chocolate. And they asked me to create a cake topper that looked traditional from one side, but from the other side revealed the bride and groom to both be zombies.
Here it is: