The first two charts are from articles written in 2008.
Click the chart, go to the article.
This one is pretty simple, if the dow is at 10400 and gold is at 1120, the ratio is 10,400/1120= 9.2875
We've had highs around 42, and lows near 1.
This one is short and sweet, if you're short on time, click below.
There are quite a few sites referencing this chart with everything from embedded interviews with Professor Shiller who developed the chart to third party analyses.
I link my favorite here because the writer uses the phrase "Congressional Moron" repeatedly