Helvetica!

So this is what we do in school: spend 1,5h watching documentaries about one single font.
Well Helvetica is probably the most used font in this business. Basicly it's used everywhere; on any kind of signs really, logos, headlines for magazines...
I think this is very interesting even though some of the "font experts" seemes to refer to it as some kind of drug:
"we used to be addicted....but not so bad anymore..."
I had no idea this was such a big deal in this business but i'm willing to learn.