I watched it last night and thought it was OK. I thought the direction was a bit clunky in places, but that didn't really detract from the thing as a whole. I think it does a very good job of highlighting what a massive and tragic loss Jaco's death was, and the impact it had not just on the musical world, but the effect it had on his friends and family. The most uncomfortable part is the footage from the instructional film he did with Jerry Jermont - i find that such a difficult watch that I gave my copy away years ago; a unique genius who was really struggling, and seemed to be falling apart on that vhS cassette wasn't something I really wanted to see again.
I might give it a bit before I watch the extras DVD.