All free Stanford classes, continually updated

[The Stanford-class.org scheme seems to be adding new courses every few days. Instead of a new post each time a new class is added, I commit to keeping this post stocked with links to all current course offerings until at least January 2012.]

Complex Systems

Model Thinking

Electrical Engineering

Information Theory

Civil Engineering

Making Green Buildings

Medicine

Anatomy

[Cancelled] Entrepreneurship

The Lean Launchpad

Technology Entrepreneurship

Computer Science

Computer Science 101

Software as a Service

Human-Computer Interfaces

Natural Language Processing

Game Theory

Probabilistic Graphical Models

Machine Learning

Cryptography

Design and Analysis of Algorithms

Computer Security

[Ran Sept-Dec] Machine Learning

[Ran Sept-Dec] Introduction to Artificial Intelligence

[Ran Sept-Dec] Introduction to Databases