MSN Germany built a brand new Social Video Mashup MSN ClipClub TV that combines different products: Clip Club TV connects existing MSN video content to the functionality of Windows Live Messenger in an innovative Silverlight 2 interface - this is the first Live Messenger UI built with Silverlight 2 that I'm aware of. Combined technologies and services are worth more than the sum of their parts. The entire MSN ClipClub Beta experience is in fact dictated by Silverlight and the Windows Live Messenger library the website integrates in order to allow them to communicate with each other. ClipClub is available exclusively through MSN Germany, and localized only for this specific market, with Microsoft failing to provide an English version, or at least a translated variant of the user interface.

More info: Clip Club TV