A new version of Google Desktop released today. (For those who came in late, I worked on Google Desktop last year, and have been writing plugins for it for some time now.) When Google Calendar released, I wrote a plugin for it too.
Since my plugin was licensed under an open-source license, Google added features to it and included it in the official download. What's more, I even get credited in the source code. Go, Google! -- kudos to the nice people in the Desktop/Calendar teams.