Microsoft has released a number of helpful Office videos. Here’s a list :
Word 2007 Demo (set of 4): Create a set of labels with mail merge
Word 2007 Demos (set of 3): Headers and footers made simple
Word 2007 Demo (set of 2): Let Word manage your table of contents
PowerPoint 2007 Demo: Add animation and sound to text and objects
Project 2007 Demo: Add, hide, and show columns
Outlook 2007 Demo: Customize your calendar
Outlook 2007 Demo: Create and use an e-mail signature
Outlook 2007 Demo: Find needles in a haystack with Instant Search
Outlook 2007 Demo: Up to speed
InfoPath 2007 Demo: Create reusable template parts
2007 Office System Demo: Enable blocked macros
2007 Office System Demo: Work with tables in a document, presentation, or message
Access 2007 Demo: Meet the Navigation Pane
Saves me having to do it!
CIAOPS 