I saw this in the theaters when it first came out and thought it was great, I have never really followed Jet Li, but the storyline behind this intrigued me, this is a really good movie, even with the bad acting at times from jason stratham but it's tolerable, very itneresting storyline about alternate universes and alos why he is fighting himself, the fight sequences are awesome as well, I have not listened to the commentary yet, but I do not think it will be all that interesting to lsiten to, there are a few documentaries about the movie which are pretty interesting, i was surprised to learn that it didn't seem liek there was that much blue screen from the documentaries but there was a lot of computer editing, very interesting stuff, if you are a fan of sci fi and of fighting/action movies this is a must have.