This may be the geekiest thing I've done in a while: since I was feeling crappy, I got comfortable on my living room couch and booted up the documentary Helvetica on AppleTV. It's basically an exploration of a font, a typeface, that has become ubiquitous in modern life. As I've long been fascinated by typography and design I kind of enjoyed what a lot of people might find a mind-numbingly boring movie.
