Rich Chart Live is a free service that lets you create attractive charts and graphs in Macromedia Flash format. These charts can either be embedded in blogs or inside your Powerpoint presentations as Flash files.
The data can either be directly entered into the grid or you can import from software like Microsoft Excel, OpenOffice Calc or even Google Spreadsheets.
Every element of the Flash charts is customizable from effects to background to color schemes. The only downside, there's a small logo in the free version but should be perfectly acceptable.
Rich Chart Live [via Beedigital.net]
Geetesh has done a more detailed review of Rich Chart Live at Indezine.