Those prices don't show up on most historical charts because there were very few sales overall, and of course most sales were at the very high-end which are typically much more inelastic price-wise.
Most of the market was exceptionally illiquid, which is why many of those listings were so slow. Alot of renovations and new construction that had just come onto the market were discounted to fire sale prices, dragging other listings with them, and _still_ didn't sell until a year or two later. Banks simply weren't making loans, and the all-cash buyers weren't around either because the stock market had tanked.
The market rebounded much faster here than elsewhere. But, still, if you actually had hard cash at the time, and an appetite for risk (nobody knew if and when things would rebound) you could have made a killing. Some people did.
The CA housing market, if nothing else, gives newspapers something to chat about on slow news days.