I just caught wind of the new Google Visualization API, so I opened up a Google Spreadsheet (we have over 10 people using Google Apps in our company now) and all I can say is "wow!"

Just as a quick experiment, I generated a bar chart of response times for one of our hosted solutions and clicked on the newly available "publish" link to generate the image below.

If the spreadsheet is ever updated, I just re-publish the chart and all external channels referring to the image are automatically updated.

I'm extremely impressed with the mashup capabilities enabled by Google Visualization and Google Charts. If the Salesforce / Google integration observations are true, then I'll be in absolute mash-up heaven