Nice Excel trick
Post migrated from my old site:
Thanks to http://www.vistaclues.com/reader-question-open-excel-on-multiple-monitors/:
If you would like to show two Excel documents in separate windows (because you are using multiple monitors), open multiple copies of Excel by holding down the control key when clicking Excel. Drop the documents in the Windows and voila…
An even nicer trick of course is called OpenOffice.org.