For the first time, I watched the Ali movie (starring Will Smith)

I'm not much of a boxing fan - and only vaguely remember the Ali fights in the mid to late 70's (my early teens)....but I was just floored by the charisma of Ali (at least as portrayed in the movies)

For those who remember Ali in the 60's (and who also saw the movie) - is the movie very "true to form" on Ali? This was a great movie (or at least I'd like to believe it's a great movie)