My wife showed me this site. It is to baking what this site is to movies. There are photos of some hilariously bad cakes, most of which appear to be store-bought! There are also a few really impressive cakes thrown in for interest's sake.
http://cakewrecks.blogspot.com/ (http://cakewrecks.blogspot.com/)
I've seen some awful ones in my day. In the end, if they taste good I'm ok with the bad design.
The StarGate cakes were terrific!