One of my sisters sent me this link a couple of years ago. It's fucking hilarious if you share the McMansion allergy.
I admit that I live in a house that is... lacking in architectural vision, myself. It was a little square box built in 1908 for a worker in the coal mine that used to be here, and then later owners added to it and now it's a 3 storey, 2500 square foot rectangle off the back of the original house. So it's not like my aesthetic sense prevented me from buying a home that wasn't the product of grand, unified design.
But still, those things are monstrosities. The busy rooflines, excessive columns, and appalling entrances just slay me.