I know this sounds like a joke, but it isn't: Helvetica is a documentary about the typeface Helvetica. Actually, it's about more than that:
Helvetica is a feature-length independent film about typography, graphic design and global visual culture. It looks at the proliferation of one typeface (which is celebrating its 50th birthday this year) as part of a larger conversation about the way type affects our lives.
I'm definitely going to go see it, if it ever shows in a theater near me, I just don't know if anyone will go see it with me!