I generally like any post that starts with "While waiting for Lost to start..." and ends up with something cool, but I especially like this post since it show one of the easy ways that you can extend OC 2007 to include customer functionality.

http://blogs.claritycon.com/blogs/kevin_marshall/archive/2008/03/20/google-ajax-language-api-amp-office-communicator-custom-translation-tabs.aspx

Very cool!  Or should I say, Tres Cool!