Head Rush is a spin-off of the popular MythBusters show airing on Discovery's Science since it debuted in 2010. Described by Discovery as a "commercial free hour of MythBusters mashups, hosted by Kari Byron", the show features about ten minutes of new material - experiments and quizzes presented by Kari, as well as TV celebrity and scientist appearances, pitching the idea that "science is cool" - interwoven in fifty minutes of material from MythBusters episodes. These celebrity segments include "Cool Jobs In Science," which has featured other Science, Discovery, and TLC stars such as Dr. Michio Kaku, Cake Boss's Buddy Valastro, Dr. G: Medical Examiner's Dr. Jan Garavaglia, and each of the other four MythBusters.

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