I should have seen this movie last year when I first heard of it. If I had I would have known longer that it is a gem. I won't spoil anything by writing too much but even though the battle ground is an antiquated video game (which sold me instantly) and the gain is a mere world title it is well worth your hour and a half; video game lover or not.
Another docu-gem that I watched recently is
Word Wars. The movie follows a few Scrabble folk as they compete for money (the only money most of them make in a year) and a national championship. Mostly watch it because you get to meet G.I. Joel (G.I. for gastrointestinal) the word genius dogged by acid-reflux.
You can't write this stuff.