Yes. (
Cross-post from this thread.)
We had a client that wanted Google Calendar integrated as well.
Our simple solution was to use the 'embed your calendar on your homepage'-feature that Google supplies themselves, to easily display a calendar in
agenda-mode.
This means that you can easily see the next and most relevant events, wasting no space on displaying empty weekends and the like.
The code can be found here:
http://hvl-gruppen.dk/mediasignage/herfoelge/gcal.html. CTRL+U for the source.
All you need to do, is edit the source to your own calendar, and you're good to go.

You need to upload your code to a server somewhere. A temporary (or perhaps permanent) solution could be to use the "public" folder of a dropbox account.
<html>
<head>
</head>
<body>
<div id="content">
################# Put your embedded calendar code here. #######################
</div>
</body>
</html>
Copy and paste the above text into a .txt file on your desktop. Open the file, replace the ########## put your code here ####### part with your
own embedded calendar code, and save the file as something
.html. Then put it in your dropbox "public" folder, if you have one, and right click the file. Follow the dropbox context-menu to the "Copy public URL" button. Click that, and paste the link you have in your clipboard now into the HTML-component in your SignageStudio campaign.
Write back if you need any help at all.