This is a documentary movie on US housing bubble 2008. I have already made a post on movies sub forum regarding The Big Short - https://www.elitetrader.com/et/threads/the-big-short-us-housing-bubble-2008.357143/ But I brought Inside Job (2010) post into this forum because It explains clearly what happened on 2008. I believe that have a clear idea of a Market Crash, will help you to identify the Market behavior and its' characteristics.
The silver lining for some of us: It was a once in a lifetime chance to buy houses for cheap, with historical low mortgages to boot.