I've seen alot of interesting articles that correlate the stock market crash of 1929 to 2009. Very simmilar! Few people know that black tuesday (Oct 29th) was actually the last gasp of a seriously flawed economy that had been going downhill for a long time, roughly two years prior to that. Here is one of the articles:
http://www.voxeu.org/index.php?q=node/3421One interesting fact I found is that the correlated loss in the Dow would mean we would see the dow drop to under 2000 from the high of 14000 we saw before the first drops.