Currently, if a user wants to copy a subset of data from a spreadsheet to a new
cell, he must do so using the Filter GUI (Data>Filter>Standard filter then
select copy to location).  This functionality would be incredibly usful were it
avaialbe from the cell itself.  That is to say, the user should be able to use
the Filter options from within the spreadsheet itself.  Here is an example of
its use (and hopefully its utility):

A user has a list of Work items on Sheet1.  The list of Work items are for all
work performed:

Invoice    Work              Units    Rate
123        Installed OOo     5        50
123        Installed Linux   5        80
234        Fixed MoBo        1        120
234        Added New HDD     1        40
123        Patched Fedora    5        80
345        Installed Apache  2        80
345        Installed Tomcat  2        80

And an Invoice Template on Sheet2.  The user should be able to say something like:

=FILTER(Sheet1.A1:D8,"Invoice",234)

And get the same result as if he used the Filter GUI to copy those cells to the
current location. Ideally, he should also be able to substitute Named ranges for
the first parameter and a reference for the last parameter so that he could
instead say:


=FILTER(ListOfWork,"Invoice",B22)

Where ListOfWork is a Named Range for the Sheet1 list and B22 is a reference to
a cell that contains the current invoice number.

Seems like a pretty useful feature (one I should could use right now!)  :)