If there were more in-depth documentaries about programmers, you would probably find the same types of personalities reign supreme...emotional, introverted, weird. If you consider yourself "normal" & "emotionally stable", then you probably aren't a very creative programmer.

"A massive douche"? You'll have to explain that one, because I've watched it, and he didn't appear "douchey" to me at all.

I wouldn't say massive douche but there were a few things that I didn't like about their attitude. But if you go past that the storyline is pretty ok and the movie overall, which features a few other game developers is actually worth watching.

Are you sure you're not thinking of Phil Fish? That seems much more likely to me.