The Wiki Append WordPress plug-in allows pages from any wiki running on the MediaWiki platform to be embedded into a WordPress page. As the wiki page gets updated and edited, the changes will be pushed out to the wordpress page so that it always shows a live view of the most current page.
Using the UBC Wiki as a content management system (CMS) makes sense if you have content that needs to be periodically updated by multiple people. Instead of having to wait for the appropriate web person to make the changes, content can be added or edited on the fly as it is needed. The wiki comes with built in safety features as well; the ability to rollback changes means that mistakes can easily be fixed and that content is never lost.
This screencast from the University of Calgary give a brief overview of the Wiki Append plugin.