A few days ago, I stumbled upon this "gem" in Mill Creek's MARTIAL ARTS CLASSICS 50 Movie Pack. It's one of the worst "pseudo-documentary-edited-together-from-bits-and-pieces-of-other-movies" films I have ever seen.
The center piece of the movie is a martial arts competition at Madison Square Garden where the winner could supposedly become Bruce Lee's successor as Master of the Martial Arts. The movie jumps around between fake interviews, martial arts clips from Madison Square Garden, old footage of Bruce Lee, and flashbacks inside of flashbacks. About half the movie consists of clips from older martial arts movies. Guest stars such as Fred Williamson and Ron van Clief show up long enough to prove that they are bad actors. The only interesting aspect of the movie is the "host," Adolph Caesar, whose distinctive voice you will probably recognize from trailers for old grindhouse movies.
This movie is deliciously bad and is required viewing for martial arts fans.