Excel 2010 Feature Request
Microsoft’s Excel 2007 added an amazing new command not present in previous versions, Remove Duplicate Data (its just right of center on the Data ribbon).
Removing duplicate data before 2007 involved either Visual Basic programming or a manual comparison after sorting the data. Both solutions are time consuming (and error prone in the case of manual comparison).
Remove Duplicate Data can search unsorted tables with thousands of rows in less than a second, pulling any duplicates that match in every column, or in a user defined group of columns.