Trading Spaces is popular, I think, because it tries to convince America that America consists of suburban Atlanta. In much the same way that 33% percent of Americans think they're in the top 5% of the income bracket.
The Renovation Show is a genre on speed, mutating even more quickly than Reality Television. Much like Reality, Renovation began in Europe. It has even spawned something of a meta-Renovation show (already), the utterly bizarre Mix It Up, which is about as strange as you can hope for in the uber-genre of Footage Television. (You don't know whether half of the characters are "real" or not.)
Anchoring the Renovation of America is Paige's empty, sad, Tara Reid eyes.