If we aren't just talking about eating then I'd have to go with soap cakes, especially those ones that are in shapes. That being said, I'm sure I'm not the only one who bit into one as a little kid just to see how it tasted...
In terms of edible cakes, I'm not too picky. It's mainly cakes that try to be more than just cake that I don't like.
*Rugby tackles Devin2600 and pedro_collins*
^ Because they copied my signature! And they threw donuts at me! :(