This is a pretty neat add-in that allows you to enhance your PivotTables when working against OLAP cubes.
OLAP PivotTable Extensions is an Excel 2007 add-in which extends the functionality of PivotTables on Analysis Services cubes. The Excel 2007 API has certain PivotTable functionality which is not exposed in the UI. OLAP PivotTable Extensions provides an interface for some of this functionality. It also adds some new features like searching cubes, configuring default settings, and filtering to a list in your clipboard. The add-in can be launched from the following menu option in the right-click menu for PivotTables: