To be honest - I'd rather use tabs than a table - neater, quicker, and easier to reformat! Each to thier own though
Favourite useful, but not common Word feature would be the Random Text Generation - as I do a lot of trialing stuff for replies on forums, it's always handy to be able to create a few pages of random text whenever it's needed!
Code:
=rand(Paragraphs,Sentences)
i.e.
would give you 10 paragraphs of 3 sentences each.