Classic Menu UI in Office 2007
So my 65 year old neighbor called me yesterday because he was frustrated with the Office 2007 Ribbon on his brand new machine...
After googling around, I found a great add-in for Office 2007 by Patrick Schmid called the RibbonCustomizer. It comes in two versions - the free Starter Edition and the Professional edition. Both versions, in addition to customizing the Ribbon, give you a "Classic UI" tab which emulate the Office 2003 menus and toolbars.
As you can see from the screen captures, it does not replace the Ribbon UI but adds onto it, which, IMHO, lets the user work with a familiar UI and allows them to slowly transition into the new UI.
For a core product like the Office Suite, Microsoft should have provided this ability by default.
My neighbor couldn't be happier...