Housing prices demonstrated the largest inflation this country has ever seen due to reckless borrowing by both the Bush admin and private citizens. Not we pay the piper, which is that the housing market is correcting back to where it should have been. People want to bitch and moan about Obama, well the housing crisis was a product of stupidity and greed by both the government in place at the time of reckless borrowing and mortgage lending and the sheep that thought flipping houses was God's gift. I have zero sympathy for the people that are upside down in their home, it was a stupid time to buy if you know anything about finance. It was a bubble, and boy did it burst.
The next domino is credit card debt by the way. There is something like 50 Billion in cards out there that is slowly getting exercised. These were mainly inactive cards sitting in drawers, and banks actually started cancelling unused cards and lowering limits.
http://www.imdb.com/title/tt0829429/
This movie does a great job of talking about what was going to happen before it actually happened. It basically called the housing crisis two years before it occurred, and it warns about the credit card crisis being even worse after the housing bubble burst.