Jeff Imada (born June 17, 1955) is an American martial artist, stuntman, and actor. He has performed stunts in over 100 films and television programs and authored one of the first books published in the US about the balisong. Jeff Imada is trained in Jeet Kune Do, Eskrima, Tae Kwon Do, Tang Soo Do, Karate, Shaolin Kung Fu, Kendo, Systema and Boxing. (Via Wikipedia)