Have a custom jigsaw puzzle made from the front page of The New York Times, or from a U.S. Geological Survey map, centered on whatever you prefer, like, your house, for instance, or a famous landmark.

Duncan's promotion of Bitstream Vera Sans Mono over Monaco as his preferred monospaced font in Terminal generates a lively discussion of monospaced fonts in the comments.

The Deja Vu fonts are based on the open source Bitstream Vera Sans family.

"[A] TrueType version of Anonymous 9, a freeware Macintosh bitmap font developed in the mid-90s by Susan Lesch and David Lamkins. It was designed as a more legible alternative to Monaco, the mono-spaced Macintosh system font."