Typography; we see it everywhere (natch), and much of it sucks. Companies go through a lot of pain to match their typefaces to their brand, often unsuccessfully. Indeed, some typefaces invoke physical reactions in me (I can’t bear to read or write in Times New Roman and Comic Sans gives me this face). In the below linked post, Seth Godin (marketing guru, computer scientist and philosopher) takes a swipe at bad typography (including a favorite gripe of mine, SAFETY signs) and points out the excellent “Typekit“.
The rest of his blog is worth reading too.