Jeffrey Wright is spot on in JMB's speech and mannerisms. For proof look up some interviews on the web (YouTube for starters). I agree somewhat with some reviewers about the pace of the movie . However one must remember the subject didn't dramatically cut off his ear for a prostitute and of course there's no blowing things up or dismembered teens at a party (though there IS a little CGI throughout). The guy was a simply great modern artist nothing more nothing less. I did enjoy the film as I didnt't know much about him but BECAUSE of the film I began researching him- which I think a good bio-pic SHOULD do- INSPIRE! All star cast too!