This chart is from Dr. Artur Adib, a physicist interested in finance.
He wanted to attempt to see how bad things are in the stock market, so he generated the chart below. It compares current pricews (top) with the Dow price in terms of the number of years since the first occurrence of that price (bottom, red)
I liked the way this puts the current historical price chart into a somewhat different perspective.
Dow Prices, Relative Previous Price
chart via Dr. Artur Adib