https://www.coursera.org/   The World's Best Courses. On-line, for Free. Courses are from different universities in a variety of disciplines. You might even get a certificate or statement of accomplishment for some courses.  You are encouraged to list a completed course on your resume.  Unlike other free/libre/open course ware you can take these courses only when they are offered. 

Hear from one of the founders of this site on why they are doing this.