“Google Cloud Connect” brings us best of both worlds; working on microsoft office products and using google docs for collaboration, ALL IN ONE PLACE.
Google Cloud Connect is a free plugin that incorporates with Microsoft Office 2003, 2007 and 2010 :D .
It adds simultaneous collaboration control, revision control,cloud sync, URLs and simple sharing to the Microsoft Word, Excel and even Powerpoint applications too.

httpv://www.youtube.com/watch?v=H12teRzulW0&feature=player_embedded