Is there any known reason why launching a Office doc (Word or Excel, Office 2007, W7) wouldn't work? If I type "Documents<tab>" to browse "My Documents", then "Planning<tab>" to browse the "Planning" directory, and then "<doc name><Alt-#>" to launch the correct doc, the correct app runs if it's not already open, but if the app is already running (with another file open, obviously) nothing happens. If I right click on the entry and select "Explore Here", I can of course open it fine from Explorer...
Is this just another one of those places where MS stabbed us all in the back by creating another way to do something that was already easy to do?