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Stanford professor Robert Sapolsky lectures on depression as a real biological disease. He covers its biological and psychological causes, how it differs from ordinary sadness, and ideas such as learned helplessness. He ties these together into one account.

Jim Pavloff rebuilds the Prodigy track Smack My Bitch Up in Ableton, identifying the samples used and recreating the track by hand.

Tony Schwartz of The Energy Project speaks at Google about managing energy rather than time. He draws on The Power of Full Engagement and his work on stamina and sustained performance.

A roughly ten-minute demo of Microsoft's Intentional Programming research system, showing its editor and an unusual way of working with code. It is the first of two clips cut from a longer video.

A one-minute CNBC clip in which Google CEO Eric Schmidt says that if you have something you do not want anyone to know, perhaps you should not be doing it. The remark became a notorious line in privacy debates.

Part 2 of an old Microsoft Research demo of Intentional Programming, showing the compiler side of a system that stores programs as abstract structure rather than text. The uploader says the companion editor clip is clearer.

A satirical Onion news segment announcing a Google feature that lets users opt out of Google's data collection by moving to a remote village without Google products or sunlight.

A short Fry and Laurie sketch in which a man returns from vacation to find his local police station has been privatized, with paid tiers of service. It satirizes privatization of public services.

The first lecture of Stanford's CS107 Programming Paradigms, taught by Jerry Cain, giving an overview of the course. The course goes from C and assembly through C++, concurrency, Scheme and Python.

First lecture of Stanford's CS106A Programming Methodology by Mehran Sahami, giving a course overview and starting on programming. The course teaches software engineering principles using Java.

Comedian and cellist Rob Paravonian rants about having to play Pachelbel's Canon in D, and shows how many pop songs reuse its chord progression. It was recorded live at Penn State.

The first lecture of MIT's 1986 6.001 Structure and Interpretation of Computer Programs, given by Harold Abelson, introducing Lisp and the idea of computer science as the study of process.

The Google I/O 2009 keynote introducing Google Wave, a real-time collaborative communication and document platform. It includes a long live demo and the developer preview announcement.

A 2006 television appearance in which Peter Schiff warns on Kudlow & Co about the housing bubble and an approaching US economic collapse.

Economist-comedian Yoram Bauman delivers a humorous translation of Mankiw's ten principles of economics for the uninitiated. It was presented at the AAAS humor session in 2007.

Lecture 1B of MIT's 6.001 Structure and Interpretation of Computer Programs (1986) with Gerald Sussman, covering procedures, processes and the substitution model. It includes the line about the power of naming things.

The secret project cutscene for The Planetary Datalinks from Sid Meier's Alpha Centauri, featuring a quote about free information flow as the safeguard against tyranny.

Pranav Mistry demos SixthSense, a wearable device that projects information onto the physical world and lets people interact with data through gestures. He also shows a paper "laptop" and says he will open-source the software.

A Google Tech Talk by Steve Weis that introduces modern cryptography and its use in practice and at Google. It covers proofs of security and security definitions and a special topic. HN commenters treat it as a talk on verifiable electronic voting.

A 2008 Google Tech Talk in which Slava Pestov introduces Factor, a concatenative language influenced by Forth, Lisp and Smalltalk. It covers the interactive environment, metaprogramming, and the language's modern high-level features and libraries.

First lecture of MIT 6.00, an introductory computer science course taught in Python by Eric Grimson and John Guttag. It covers the goals of the course, what computation is, and data types, operators and variables.

Mike Arrington of TechCrunch speaks at Startup School 2008 about how to get press coverage for a startup and how to respond to it.

A 1983 behind-the-scenes film about making the HBO 'Feature Presentation' starship logo sequence. It shows the handcrafted miniature city, motion-control cameras and practical effects.

David Spiegelhalter, Professor of the Public Understanding of Risk, uses statistics to weigh everyday risks such as bacon sandwiches and cycling. The six-minute piece introduces micromorts as a way to compare the risk of dying.

Sean Parent of Adobe argues that object-oriented frameworks ultimately fail to deliver scalable, high quality software and proposes combining generic and declarative programming instead. It draws on Stepanov's Elements of Programming.

A short clip from the BBC sitcom Yes, Prime Minister in which Jim Hacker explains which kind of person reads which British newspaper. It is a satirical take on press readership and bias.

Rob Pike's October 2009 Google Tech Talk introducing Go, a new experimental systems language designed for fast builds, concurrency and garbage collection. It covers the goals, syntax and type system.

Lecture 7A of the 1986 MIT 6.001 SICP course, with Gerald Sussman presenting the metacircular evaluator, part 1. It shows how a Lisp evaluator can be written in Lisp itself.

Press conference footage in which the suspects in the 2007 Boston Mooninite bomb scare answer questions about 1960s and 1970s hairstyles.

A one-minute animated commercial for the antidepressant Zoloft, described as the original that inspired later sequels and parodies.

John Bird and John Fortune satirize the investment banking mindset in a mock interview about the subprime mortgage crisis. The sketch lampoons structured credit products and the banks' reassurances shortly before the crash.

The opening credit sequence of the 1960s British spy series The Prisoner, with Patrick McGoohan. It is a short intro to a cult TV show.

Dick Hardt's fast-paced OSCON keynote on Identity 2.0 and the move toward user-centric digital identity. It is also famous for its rapid-fire, many-slide presentation style.

The first installment of a hobbyist's video diary documenting his build of a giant walking spider-like vehicle. The footage is casual and self-shot, following the early stages of the project.

Karl Fogel's 2006 Google Tech Talk traces copyright from a 16th-century English censorship law to a distribution monopoly. It then surveys alternative economic bases for creation and distribution.

Peter Schiff, during his 2010 Senate campaign, argues that government loan programs and subsidies push college tuition up.

A 1947 US military film that deconstructs how the Nazi regime used divisive propaganda and prejudice to split and control a population. It teaches viewers to recognise demagoguery tactics.

Merlin Mann's 2007 Google Tech Talk on Inbox Zero, covering Getting Things Done, why an empty inbox matters, and strategies for handling high-volume email. It is a talk on attention and processing mail rather than on emptying it for its own sake.

A 2007 video review of the Neonode N1m phone, which uses touch gestures including a swipe to unlock. It was published just before the iPhone's launch.

Steven Pinker's TED talk charts the long decline of violence from biblical times to today, arguing that despite Iraq and Darfur we may be living in the most peaceful era of our species.