To try it out, first you have to retrieve your Google Calendar private XML URL. It is found in your Google Calendar settings menu. Download this JavaScript file, and change the "username" variable to your Google username. Change the "key" variable to the "private-XXXX" portion of your private XML URL.
Save the updated JavaScript to your device, and create a new task like below.
The JavaScript action is under "Script", and Say is under "Misc". For the JavaScript "Libraries" attribute, click the search icon and select jQuery.
I use this as part of my morning profile. It's very flexible if you don't mind playing around with JavaScript. Let me know what you think!
Here's another link to the JavaScript file.

