Sparklines in Excel
Adding Some Spark to Your Spreadsheets
Formatting Sparklines
Sparkline Axis Options
Sparklines – Lining Up the Points
A Sparkline Trick - Using the Horizontal Axis as a Reference Line
One More Sparkline Trick

Icon Set Improvements in Excel 2010
Data Bar Improvements in Excel 2010
More Conditional Formatting Features in Excel 2010
The DisplayFormat OM

Chart Object Model in Word & PowerPoint
Improvements to Chart Performance
More Charting Enhancements in Excel 2010