Just released by the New Zealand Rugby Union - grab the All Blacks Rugby Gadget from http://www.allblacks.com/gadget/default.htm The gadget regularly updates including fixtures, results, streaming video, news and also information on our team.
The gadget runs on Windows Vista 32bit, and also a browser based version that runs cross platform on Vista 64/Windows XP/Windows Server 2003 (IE/Firefox) and also on MacOS (Safari/Firefox)
It is built with Silverlight 1.0 so make sure you have installed Silverlight to see all the Gadget features. When installed it will be docked on the Sidebar, remember to drag off the Sidebar to get all of the functionality
Checkout more info from Nigel here and Deeps here, and Nigel's Silverlight Streaming based screencast demo of the app.