Now I do not want to set a precedent here that I only post when Google releases a new tool, but unfortunately this is the most exciting thing since the Google Font API. GoogleCL, Google’s new Command Line tool, comes with access to Blogger, Calendar, Contacts, Docs, Picasa, and Youtube. I dislike Google as much as the next guy, despite using Gmail, gDocs, gCalendar, and having and Android phone, but you have to admit this really covers the gamut of what we use the web for most. The only thing missing is some kind of Facebook and/or Twitter utility via Google.
Google Project Page: http://code.google.com/p/googlecl/