How current PE ratios stand up historically - MarketWatch

From MarketWatch:How current PE ratios stand up historically - MarketWatch: "Here's today's investment pop quiz: Where do price/earnings ratios stand today relative to several months ago, as well as to the beginning of this bear market in October 2007?..... Based on earnings on an "as-reported" over the trailing 12-months, the p/e ratio for the S&P 500 index stood at around 20 at