I learned something new in Woody's Email Essentials today. In Outlook, when you're in a place with a folder list (such as the “Go To Folder” dialog, or the folder list in the main view), you can use * and - on the number pad to expand and collapse the folder tree, starting from the folder that's currently selected.
So, to expand the entire tree, Shift+Home to go to the top and press * and it will expand all of your folders, so that you can type-down to the folder you want. Similarly, - will collapse.
I usually use type-down to the folder I want and then hit the right arrow to expand, but this way you can expand all of the subfolders in the entire store, which is pretty nifty.
Note: The tip in today's WEE about using delayed delivery will not work if you are working against an Exchange server, see my previous entry for one way to do that.