My wife recently introduced me to the practice of "tricking" (essentially, a form of martial arts demo that focuses on jumps and acrobatic maneuvers - in some ways, the martial arts version of parkour) - video here for reference. The art clearly has its roots in traditional martial arts but the core techniques seem borrowed from multiple disciplines. Is there any documented origin of tricking and how it developed?
This Yahoo article may help you. It details the origin and evolution of tricking since the early 1960s. It draws from movie stunts, capoera, and parkour as source for the creation of tricking.
However, I have no idea how authentic or authoritative it is. Feel free to add to this answer.