It has to be said: Office Update is really, really, really cool. Check it out at http://office.microsoft.com/.
It doesn't just have software updates (which it has) or provide tips and the like (which it does). There's also a very nifty Tools for Your Job section, which includes templates, ideas on how to use Office tools, general process ideas, and demos, collected in "practices." This page is particularly impressive.
In any case, definitely worth checking out if you haven't seen it.
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