This plugin will grab docs out of a collection in Google Docs, create or update a post in WordPress and then move the doc to a new collection. Google Docs no longer supports xmlrpc, so this is perhaps the easiest way to move content from your Google Docs account to your self-hosted WordPress install.
You can see more details at http://dev.bangordailynews.com/2011/06/16/marrying-google-docs-and-wordpress-or-really-any-cms/