If you haven't seen this yet, it's very cool.   We all know that Office has way more in there than most people ever see.   The 2007 ribbon made a big difference in making the commands more visible, but it still doesn't reveal everything in the default views.   If you are ever unsure where to find a command, or better yet, if it exists, the Search Commands toolbar is for you!

I've only had it installed for a few days, but I just love it.   It can be faster than trying to remember where something is, and I've found features that I wasn't aware of a few times.   Cooler still, when it shows your search results (which are the actual buttons themselves!) they indicate how to find them (or if they are currently hidden).   It has a simple purpose and it works very well.   I'm kicking myself since I bet it would have been a great VSTO sample app to create!

Source: http://www.officelabs.com/projects/searchcommands/Pages/default.aspx