Ultimately, what made *Pulling John* worthwhile was that it managed to get me emotionally invested in the 2008 arm-wrestling final—and for an hour-long documentary, I’d say that’s a definite win. I don't know about everyone else, but my personal experience with arm wrestling consists of losing. My references are limited to *Over the Top* from 1987 and late-night ESPN broadcasts after the world lumberjack competiti…