Modifying fonts in ggplot2

Question

I am looking for a way to modify font types in ggplot. At the moment I would be happy enough to simply change fonts to the \'courier\' font family, but ultimately my goal is

Answer 1

Also check out the Cairo package, which has support for totally switching out all of the fonts with those of your choosing. http://rforge.net/doc/packages/Cairo/00Index.html