Philosophy: History of Philosophical Thought 
Essential
On Moral Duties
By Marcus Tullius Cicero: "This treatise, then, may be regarded as an exposition of the ethical system of the Stoics of Cicero’s time, yet with a special limitation, purpose, and adaptation."
Recommended
Robert Nozick Vs. The U.S. Congress
Cato Adjunct Scholar, Richard Epstein, provides a philosophical analysis of the effort by the U.S. Congress to increase home ownership in society in this Forbes article. Contrasting the pattern principle of justice held by Congress against Nozick's justice in acquisition, it is a great work that shows how philosophy is important to the real world.
Freedom Properly Understood
By Tom G. Palmer: "Let us hold up a standard of freedom, expressed in clear and precise terms, not modified by misleading adjectives, and promote that standard to the public, in the knowledge that with freedom – because of freedom – we enjoy prosperity, peace, dignity, knowledge, health, and so many other benefits. But as we enjoy the blessings of freedom, let us not confuse those blessings with freedom itself, for on that path we are led to lose both freedom and its blessings."
The Legacy of Ayn Rand
Reason Magazine Senior Editor and "Radicals for Capitalism" author Brian Doherty takes the modernist measure of novelist, philosopher, and cult figure Ayn Rand.
History of Religion
How has the geography of religion evolved over the centuries, and where has it sparked wars? This map gives you a brief history of the world's most well-known religions: Christianity, Islam, Hinduism, Buddhism, and Judaism. Selected periods of inter-religious bloodshed are also highlighted. Want to see 5,000 years of religion in 90 seconds? Ready, Set, Go!
Ayn Rand interview with Phil Donue (1980)
Ayn Rand discusses her philosophy and writings with Phil Donahue. Audience question and answer follows. Part 1 of 5, via youtube. (Parts 2-5 also available on youtube)
Rand and the Right: Reflections on the 50th anniversary of Atlas Shrugged
By Brian Doherty: "Because of her opposition to New Deal government controls, novelist and philosopher Ayn Rand started off thinking of herself as a conservative. By the time her blockbuster novel, "Atlas Shrugged," was published 50 years ago this week, she'd changed her mind. She decided she was a radical -- a "radical for capitalism," that is."