Microsoft SharePoint and Office 2010 work and play together very well. In fact, it could be hard to tell that your files are on a secure web server, rather than on your own hard drive. Here is a quick tutorial showing several ways of saving, opening and moving files around using Office and SharePoint 2010.
[youtube]http://www.youtube.com/watch?v=7K-RcbKm3FM&hd=1[/youtube]