This was an excellent documentary on a typical fighter and the trials and tribulations one must endure to not only compete, but to gain a certain level of success as well. In this case, Mark Kerr was the subject and we are showed quite a few of his ups and downs in his career, both personal and professional.
The Smashing Machine also brought the average joe into what is going on behind the scenes, the press conferences, the relationships with the other fighters, etc. We are shown that Mark Kerr and Mark Coleman are good friends, who train together and are also willing to step into the ring, octagon or whatever and fight it out with each other as well. At times, this actually seemed to drift away from Kerr and more onto Coleman, who started to become more interesting than Kerr later on in the movie.
We are also given a look at some intense training with Kerr and Bas Rutten. This was probably the best part of the documentary, as I was most entertained by the scenes with Kerr and Rutten.
Although I enjoyed The Smashing Machine immensely, I would have chosen someone other than Kerr to feature. Personally, I would like to see how someone like Randy Couture, Tito Ortiz, Ken Shamrock or any of the other bigger names in Mixed Martial Arts go about their daily business and training. I'm sure it would be just as enthralling, if not more. 8/10