Head Rush is a spin-off of the popular MythBusters

MythBusters

MythBusters is a science entertainment TV program created and produced by Beyond Television Productions for the Discovery Channel. The series is screened by numerous international broadcasters, including Discovery Channel Australia, Discovery Channel Latin America, Discovery Channel Canada, Quest...

 show airing on Discovery's Science Channel since it debuted in 2010.

Described by Discovery as a "commercial free hour of MythBusters mashups, hosted by none other than Kari Byron

Kari Byron

Kari Elizabeth Byron is a San Francisco-based television host and artist, best known for her featured role on the Discovery Channel show MythBusters.-MythBusters:...

", 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

Discovery Channel

Discovery Channel is an American satellite and cable specialty channel , founded by John Hendricks and distributed by Discovery Communications. It is a publicly traded company run by CEO David Zaslav...

, and TLC

TLC (TV channel)

TLC is an American cable TV specialty channel which initially focused on educational content. Since 1991 TLC has been owned by Discovery Communications, the same company that operates the Discovery Channel, Animal Planet and The Science Channel, as well as other learning-themed networks...

 stars such as Dr. Michio Kaku

Michio Kaku

is an American theoretical physicist, the Henry Semat Professor of Theoretical Physics in the City College of New York of City University of New York, the co-founder of string field theory, and a "communicator" and "popularizer" of science...

 ( Sci Fi Science

Sci Fi Science: Physics of the Impossible

Sci Fi Science: Physics of the Impossible is an American documentary television series on Science which first aired in the United States on December 1, 2009. The series is hosted by theoretical physicist Michio Kaku and is based on his book Physics of the Impossible. In each episode, Dr...

), Cake Boss

Cake Boss

Cake Boss is an American reality television series, airing on the cable television network TLC. Set at Carlo's Bakery in Hoboken, New Jersey, the show mainly follows Buddy Valastro, his mother, four sisters, and three brothers-in-law, as they operate their business, with a focus on how they make...

 Buddy Valastro, Dr. G: Medical Examiner

Dr. G: Medical Examiner

Dr. G: Medical Examiner is a reality television series shown on the Discovery Fit & Health. Dr. G, or Dr. Jan Garavaglia, is the Chief Medical Examiner with Florida's District Nine Medical Examiner's office in Orlando, Florida.This series features Dr...

s Dr. Jan Garavaglia, and each of the other four MythBusters.