Although I’m not intimately familiar with the Guitar Hero phenomenon, I’ve observed that gamers tend to make a certain unavoidable facial expression while getting their Eddie Van Halen on. Thankfully, the “John Mayer O Face,” which is based upon years of posturing in front of the mirror and contemplating the etymology of the word “douchebag” and its necessary philosophical implications, does not figure into the execution of the “Guitar Hero Face,” which appears to be largely instinctive and wholly spontaneous. During a promotional event for the interminable 25th Anniversary of the Rock & Roll Hall Of Fame, actors Penn Badgley and Alan Cumming both did their best Guitar Hero Face.