It certainly is.
It's weird yet fascinating watching Michael Jackson prepare for the concerts that never happened. I think what struck me most is what a natural dancer he is. Even when he's clearly going through the motions in rehearsal, his motion is so naturally graceful.
Overall the film is very successful, especially considering the fact that it was never supposed to be a movie at all. It's basically home video that was supposed to be publicity and backstage documentary footage for DVD extras. So it was never planned to be released as a musical. The audio was never intended to be heard this way. And it totally rocks.
There are performance weaknesses from Jackson though. When he's on camera rehearsing, there was no way around using his half-assed vocals in some cases. Perhaps the biggest shock is actually how good he looks. Rumors were that he was so weak he could hardly stand, let alone dance. In reality, he looks very thin and pale, but in terms of energy, he acts a lot younger than 50. One thing is certain, no matter how much tickets would have cost, this concert would have been worth it. I imagine he would have been great to work with.
God only knows what would have happened if he hadn't passed away so young.