Dow 4,000?

We think we will see 10-12% unemployment, a 4-5% decline in GDP, and the equity markets could drop at least 70% from peak to trough.

J. Kyle Bass of Hayman Advisors, 14 October 2008. (htp: "Dearieme")

This source reckons LIBOR is out of sight, not because of counterparty worries, but because banks simply haven't got the money to lend.

Less pessimistically - just - George Slezak (quoted on Jesse) thinks the Dow could possibly go as low as 6,000.