A spent during period report

I'd love to see a report that show's how much has been spent during a period of time.

This report would sum the cost of time sheets and expenses during the filtered timeframe. Possibly done on a single project, or across several at a time. 

It would be great to see this graphically showing the spend over time. e.g looking back over the last 6 months, view the sum of month by month spend.