By total coincidence I watched that movie yesterday. I enjoyed it, though it's mostly just a bunch of people's opinion about Helvetica/modernism/post-modernism. Doesn't good much deeper than that in typeface design.
Can't remember where I heard about it (possibly MetaFilter, or here?).
MeFi, it was posted there a couple of days ago including the film link. My favorite comment from the the resulting thread was 'Impact or go home, font dorks', which I have been unable to get out of my head since.
Can't remember where I heard about it (possibly MetaFilter, or here?).