- Structure and Interpretation of Computer Programs: Videos of Abelson and Sussman's classic lectures
- Donald Knuth lectures online
- Ars Digita University
- UW's Professional Master's Program in Computer Science lecture videos.
A blog called FreeScienceOnline has a better course catalog than most universities.
- UC Berkeley's youtube collection
- MIT's public events videos and Open Courseware
- Videolectures.net lots of computer science, machine learning, and bioinformatics
- SE-Radio Software Engineering Radio - the podcast for professional developers
- parleys.com geek oriented video lectures
- IEEE new media
- Hidden Video Courses in Math, Science, and Engineering from the data wrangling blog
- Must-see TED talks
- A Brief History of Mathematics
- MIT's Calculus Revisited
Life-hacker has a post on how to Get a free college education online.