When he was walking from house to house he looked like the "robot" mode of Optimus Prime, he wore his toy helmet. Then at every door... he felt he HAD to transform. We he must have done it 100 times between trick-or-treating and the community trunk-or-treat we go to. It was a show stopper... even had some adults asking him to do it over and over as they showed their friends and then video taped it on their iphones.
Sadly I don't have a video of it myself as I had my hands full with my daughter. But here is a link to one on Facebook. My friend had taken it. http://www.facebook.com/album.php?aid=21577&id=1428827147&saved#!/video/video.php?v=107044832640571
He loved it and had such a blast.