What is your Sorting and Filtering in Excel issue?

Responses:

#REF! displayed when sorting list left to right
Cannot move to item in filtered list by typing the first character of the item
Data with formulas sorted incorrectly
Entire row sorts instead of selected range in shared workbook
Headers in a range are included in the sort
Undoing Sorts and Filters in Excel...
How to: Create custom filtering criteria
How to: Sort Data
How to: Use AutoFilter
How to: Use AutoFilter with Top ten