Free Stanford online courses: Enrollment deadline is the next Monday or so.
- Database class here: http://db-class.com/
- Machine Learning class here: http://ml-class.org/
- AI class here: http://www.ai-class.com/
Also there's some extra non-interactive resources for some of courses taught at Stanford Engineering. Which might be of some interest. Particularly that pack of videos for iPhone app development course.
One extra Google hint: a page which links to some 400 of free online courses. Definitely, time is now the most precious resource of all. :)