I've put together 14 high-quality original podsafe instrumental tunes from my Penmachine Podcast into a CD album you can buy. It also includes a bonus data DVD with a bunch of cool stuff that isn't on this website. Find out more...
Graffletopia provides a whole bunch of excellent stencil object templates for the OmniGraffle diagramming application for Mac OS X. Lots of cool stuff, though some don't seem to download at the moment. (Via John Gruber.)
Also from Mr. Gruber, a link to the absolutely massive Mac OS X Internals, a book that probably tells Mac nerds everything and way way way way more than we'd want to know about how Mac software systems work, from the ground up.
And it is a mere 1680 pages long, weighing 2.5 kg, or about the same as a small but still healthy newborn. It is also, therefore, not available for free Amazon Super Saver shipping.