The movie tells the story of one of the biggest bassists that ever lived, who was at the top during the 70's when Jazz and Rock had a brief romance that blended the two together before music became a very segmented compartmentalized business.
I'll assume anyone considering the movie will already know the basic story of Jaco's rise and fall. If not, then I would certainly not recommend this documentary. Some documentaries work well for people that aren't even familiar with the central subject, and example would be Senna, or Finding Sugarman... Both of those two told a story that drew you in so that you felt a connection to the character even if you weren't familiar with him before. Jaco does none of that it pretty much just retread the information you probably already were aware of and throws in some old photos and film clips that you might not have already found surfing on Youtube when looking up Jaco.
The production values are generally good, the real down fall is that too much time is spent running old grainy footage from the past that doesn't really help the story as much as it simply serves as a media to throw out footage someone found in a basement somewhere.
What will probably upset more people even more is that the documentary was marketed on the internet using clips of artists such as Flea talking about Jaco, so that you expected to see more of that type of thing in the documentary... sadly it is missing. The majority of the interviews are with a few select people that worked or knew him personally but they don't give a lot of insight into him. You also are missing any discussion of what Jaco did or how he was doing it... I would have much preferred to have the film spend a few minutes going over the harmonics he was getting out of the bass and how it was achieved instead of hearing about how he used to crash at so and so's house and just hang for a days...
Sorry but I am a fan of his and was expecting more... this didn't deliver. Even a hard core fan will be hard pressed not to hit the fast forward button to zip through some of it... The up side is I think the only way you can see this is to buy the Blu-ray or DVD of it... I would recommend the DVD over the blu-ray because there is so much old grainy footage that you don't really need the clarity of blu-ray to view SD video... Don't expect to watch the whole thing in one sitting it too me two days because I got bored the first night and finished the second.