In Windows 8 there is a movie that is played for the first time logon and there is a Group Policy setting you can use to disable it. Mikael Nystrom writed a nice MDT Application you can download and install and put it into your task sequence for Windows 8 and you will never ever see it once more. Happy deployment!
Download the zip file, extract it and create a new Application in MDT 2012 Update 1.
Select Application with Source Files
Edit Task Sequence
