I just stumbled upon a very interesting graph on the US housing bubble taken from an August 2006 New York Times article: Read Between All Those For-Sale Signs. The articles is retrospectively very interesting, and hit a few nails on their head. The intro is particularly inspiring to me:

Real bubbles pop. They are fully formed one moment and gone the next. Financial bubbles rarely meet with such a definitive end, which has always been the biggest problem with the metaphor. They let out their air in unpredictable bursts, and it’s usually impossible to figure out whether they have finished deflating or are just starting to.

Good read !