This one:
http://www.lifestyle.com.au/property/the-claremont-origami-house-before-and-after.aspx
The things I hated the most were the scrap metal front fence, the wobbly brick walls, the steel fence used as a guard rail for the upstairs area, the stupid bloody angled roof eye sore (should have seen it when it was stark yellow), exterior paving stones inside etc...
Not one thing I liked about that house. And check out the actual episode, you don't get to see all the horrible details in the picture gallery. Project free tv has the episode links.