The reason that there is so much negativity toward this film is for the very understandable reason that its title is "Jimi Hendrix - Rainbow Bridge", and the DVD's cover is nothing but Jimi.  It was a marketing tool when the picture first came out over 30 years ago, and Jimi is still being used to market the film.  It's like all the folks who sat (and still sit) through "La Vallee" just to hear the Pink Floyd score.  I guess it doesn't ever occur to them that the film was made for its own reasons and in order to bring the folks in, the filmmakers made sure there was a popular reason.  I doubt that 99% of the people who rented this film would have rented it if the title or the cover didn't mention Hendrix.  In fact, judging by the majority of the reviews here, I'm sure of it.!