While these all sound wonderful, the most basic (and free) add-in that makes Word, Excel, and PowerPoint much easier to use is Office Tab available at http://www.extendoffice.com/product/office-tab.html. One of the most frustrating things about MS Office is that opening multiple files of Excel, for example, opens multiple instances of Excel. Office Tab, which comes in free and paid versions, ends this screen clutter by opening all Excel files in a single instance of Excel. Office Tab adds tabs for each file -- just like a browser does for each webpage. You can customize Office Tab to your heart's content so that you can double click on a tab to close a file, change the colors and shape of tabs, and other customizations. The major benefit of the $25 version is that it lets you rename a file by right clicking on its tab -- making life a bit easier. All-in-all, Office Tab is far and away my favorite productivity enhancing add-on for MS Office. It works in Office 2010, 2007, 2003, and 2000.

Try this
http://office.microsoft.com/en-us/word-help/add-autotext-HA010255209.aspx

Before Office 2007, there was a great Microsoft Office feature called AutoText where you could place boilerplate paragraphs or just long phrases instantly by just a short abbreviation code. Anything like that available as an addin? Thanks.