Google Docs offline editing feature is here.

Google Gears is an offline browsing feature provided by Google, which allows Notebook users to access the content they need even in environments where they cannot connect to the internet. From the early stages of Google Gears' release, it was emphasized that it would support both Google Reader and Google Docs. However, support for Google Docs was delayed for quite some time. Now, this much-awaited feature, which allows your notebook computer to no longer require the installation of Office software, has finally been released.