During the price drop of last year I got a Blackberry Playbook prior to the version 2 update (before it had a decent calendar app). When trying to use Google Calendar in its place, one of the things I ran into was that Google Calendar would default to the mobile site in a browser, whereas some friends and I really liked using the full site at the time. We ran into this issue with some other mobile devices, too.
One way to get the full Google Calendar to display in the browser is to use the following URL:
Bookmarking this URL allows for easy access to this web app, and this workaround solution still worked as of March 2012.