Celebs React To Katy Perry Super Bowl Halftime Show 2015. Katy Perry's Pepsi Super Bowl halftime show was as phenomenal as promised, and we aren't the only ones who were impressed! Click here to watch : Katy Perry Super Bowl Halftime Show 2015 Was Superb – Did She Diss Taylor Swift : https://www.youtube.com/watch?v=KAtKlixxnTg