Hi, mrzoogle!
It now comes to my mind this absolutely smart and useful piece of software, in my opinion, of course.
http://www.uderzo.it/main_products/space_sniffer/
It has two little bugs when operating on a whole unid (lacks of a slash), fixed with this two registry entries:
http://dl.dropbox.com/u/60558749/Space%20Sniffer%201.1.4.0%20register%20additons%20%28by%20SirJB7%29.rar
Give it a try.
Regards!
PS: yes, I know it's not about Excel, but I like it!