http://blogs.msdn.com/mharsh/archive/2007/02/19/chad-campbell-s-video-slider-puzzle.aspxChad Campbell has created a very cool WPF/E slider puzzle that uses the Clip property on MediaElement achieve the effect. Chad's blog post has more information including source. Click the image below to run the sample.en-USCommunityServer 2.1 SP1 (Build: 61025.2)