Helvetica is a documentary about the typeface with the same name, and typography and graphic design in overall.
What matters is not the letters are inked, but the whitespace between them.
The documentary is a bit too long, but it presents you opinions from several graphic designers about Helvetica, what is so good about it, how it is interpreted, and how you deal with the fact that’s today’s default font.
I must admit that while watching it, I got the urge to make my own typeface, and I even got a few ideas for this wiki’s redesign.