Windows: Free Office 2003 & 2007 plug-in OffiSync lets desktop users open documents from, and save to, Google Docs' online servers, but that's nothing amazingly new. A newer Google Search option does, however, integrates powerful image and web searches.
That means that, rather than relying on Microsoft's Clip Art repository, or switching away from Office to search for a usable picture, you can hit the Google Search button on your Office toolbar. Hit that button, click the drop-down box to choose the licence you want or need, set parameters for sizes and faces, and then find, click, and quickly insert that picture into your document or presentation. That feature, and OffiSync's basic functionality, are pretty well explained in this video introduction:
OffiSync is a free download for Windows systems with Microsoft Office 2003 or 2007 installed. What's your favourite Office/web syncing solution? Tell us in the comments.