In the sample workbook, what I'd like to see is one row for each measure then two columns -- the first column would show the total for the filtered items and the other column would show the total for everything else.
I attempted to use a set, but there doesn't seem to be a way to dynamically change the contents of the set. I also tried parameters, but as far as i know you can only select one item per parameter and I need the ability to select multiple items.
Any other ideas?
LOD expressions, particularly of the FIXED variety, will help you here as you can calculate the results at various Dimension levels, and have the results either filtered on not based on the type of expression you use.