Relaunch is a 2 foot UI utility to add a new tile to the Extras Library of Windows Media Center. It requires the .net framework 4.x. All it really does is write an autoit script, and an MCL file for you. This is useful for adding launchers in WMC for YouTube, Hulu, Clicker.TV and more.
Relaunch 2.03: File:relaunch203.zip
More info here : http://code.google.com/p/relaunch/