After I added the promotional pics for I Heart NJ and this picture link prompted both myself and Jen to wonder why Stella would be punching Barney. Then after seeing the episode I was still wondering how on earth it happened because that wasn't in the episode either =D

It was minor but it was kind of irritating me and after a wonderful user on Livejournal posted the Creative Arts Emmys clip, it was solved. Although it was released by Himym as a promo pic for I heart nj (See link, photo 4) it's not from Himym at all. This is actually an image from a backstage gag they did where Sarah Chalke punches NPH! Oddness but hey =D Mystery Solved.