Question: Tim Tackett is a martial arts instructor who runs a non-profit group that is dedicated to preserving a hybrid philosophy of martial arts that was referred to by Bruce Lee as what? 

Context articles: Bruce Lee's Secret
Tim Tackett
Kam Yuen
Bruce Lee's Fighting Method
Jeet Kune Do
Tao of Jeet Kune Do
Richard Bustillo
Dan Inosanto
Hybrid martial arts
Bruce Lee

Bruce Lee's Secret (aka Secret of Bruce Lee and Bruce Lee's Deadly Kung Fu) is a 1976 Hong Kong martial arts action film directed by Chan Wa and William Cheung Ki, which is also a pseudo biopic of Bruce Lee.
 It stars Bruce Li as "Bob" Lee, whose life is essentially the same as Lee's and is on two occasions actually referred to as 'Bruce'.
 The film has been released under the alternate two film titles they were: "The Story of the Dragon" and "Bruce Lee: Master of Jeet Kune Do".
 This film is not to be confused with another Bruce Lee biopic, "".
Tim Tackett is a martial arts instructor and author from Redlands, California who runs a non-profit group dedicated to preserving Bruce Lee's art of Jeet Kune Do.
Kam Yuen, (born March 10, 1941 in Hong Kong), is a Chinese-born American martial arts expert who was the consultant and stunt coordinator for the original television series "Kung Fu".
 He also played the roles of Wong Ti and Lin Wu in the series and was the double for Keye Luke, who played Master Po in the series.
 Yuen was David Carradine's martial arts instructor.
 He credited Yuen as the inspiration for the series' main character, Kwai Chang Caine; Carradine’s book, "The Spirit of Shaolin", was dedicated to Kam.
 A grandmaster of Shaolin kung fu and known as the "Preying Mantis of North America" for his skill in the fighting style, Yuen’s film credits include the role of Red Band in "Circle of Iron", co-written by Bruce Lee which was produced posthumously and also stars Carradine, and "Project Eliminator".
Bruce Lee's Fighting Method is a book of volumes covering Bruce Lee's martial arts abilities of the "Jeet Kune Do" movement.
 The book is available as a single hardcover volume or a series of four paperback volumes.
 The text describes Bruce Lee's Kung Fu fighting techniques, philosophy and training methods.
 This book was originally written in 1966 by Bruce Lee.
 However, Lee decided not to publish this work as he feared that instructors would use the fighting knowledge in this text to promote themselves.
 In 1978, after Bruce Lee's death, his widow Linda Lee Cadwell decided to make available the information on her husband's work.
 Lee's death changed the perspective of releasing the information that Bruce Lee himself had vacillated about.
 The book was published with the help of Mitoshi Uyehara.
 Uyehara was the founder and owner of Black Belt Magazine.
 During the early years of the publication, Uyehara served as the publisher.
 Bruce Lee contributed many articles to the publication during the 1960s and a friendship ensued between the two men.
 Uyehara, a martial artist in his own right, was a key personage in arranging Lee's material for publication.
Jeet Kune Do (; ), abbreviated JKD, is a hybrid philosophy of martial arts heavily influenced by the personal philosophy and experiences of martial artist Bruce Lee.
 Lee, who founded the system on July 9, 1969, referred to it as "non-classical", suggesting that JKD is a form of Chinese Kung Fu, yet without form.
 Unlike more traditional martial arts, Jeet Kune Do is not fixed or patterned, and is a philosophy with guiding thoughts.
 It was named for the Wing Chun concept of interception or attacking while one's opponent is about to attack.
 Jeet Kune Do practitioners believe in minimal movement with maximum effect.
Tao of Jeet Kune Do is a book expressing Bruce Lee's martial arts philosophy and viewpoints, published posthumously (after Bruce Lee's death in 1973).
 The project for this book began in 1970 when Bruce Lee suffered a back injury during one of his practice sessions.
 During this time he could not train in martial arts.
 He was ordered by his doctors to wear a back brace for 6 months in order to recover from his injury.
 This was a very tiring and dispiriting time for Lee who was always very physically active.
Richard S Bustillo (January 28, 1942 – March 30, 2017) was a Filipino-American martial arts instructor from Hawaii who was a student of the late Bruce Lee and an authority on Jeet Kune Do Concepts and Filipino Martial Arts.
Daniel Arca "Dan" Inosanto (born July 24, 1936) is a Filipino-American martial arts instructor who is best known as a training partner of Bruce Lee.
 Inosanto is an authority on Jeet Kune Do and Filipino Martial Arts including Eskrima and Silat.
Hybrid martial arts, also known as hybrid fighting systems or sometimes eclectic martial arts or freestyle fighting, refer to martial arts or fighting systems that incorporate techniques and theories from several particular martial arts (eclecticism).
 While numerous martial arts borrow or adapt from other arts and to some extent could be considered hybrids, a "hybrid martial art" emphasizes its disparate origins.
Lee Jun-fan (; November 27, 1940 – July 20, 1973), known professionally as Bruce Lee, was a Hong Kong and American actor, film director, martial artist, martial arts instructor, philosopher and founder of the martial art Jeet Kune Do.
 Lee was the son of Cantonese opera star Lee Hoi-chuen.
 He is widely considered by commentators, critics, media, and other martial artists to be one of the most influential martial artists of all time, and a pop culture icon of the 20th century.
 He is often credited with helping to change the way Asians were presented in American films.