I've been spending more and more of my time thinking about typography, fonts, and lettering.  It's one of the foundations of communication.  The typeface we use adds character to what we say in the same ways that inflection adds to the spoken word. 

Here are a handful of videos I've seen recently that have impacted how I think about type. 

I didn't realize it until after some googling, but this speaker and I went to the same university. 
Mel's talks constantly make me think differently. 
The designer of Verdana, Georgia and Bell Centennial, some of the earliest and most important digital typefaces. 
One of the Tobias Frere Jones designed Gotham, which is a contender for the most important font of the 21st century.