The most elaborate groomsmen invite ever: stop-motion video & custom website with personal video invites. Amazing. It's by the guy who "stopped time" (http://wedinator.icanhascheezburger.com/2010/07/21/sheer-awesome-video-marriage-proposal-frozen-in-time/)
The couple commissioned a comic artists friend of theirs (at http://www.viruscomix.com/subnormality.html) to create a picture of their wedding party. The wedding photographer then had everyone recreate the pose. I think it was done very well.