Sometimes I'm tempted to enroll in an online class that I don't really "need." I know it won't help me at work or pad my resume, but I want to learn the subject anyway! Often a book or a free online class will do. But, when those just don't cut it I usually end up browsing the Teaching Company's website. The Teaching Company offers quality audio and video courses from stellar professors around the nation. I prefer the audio courses because I can listen to them while I'm in my car. They don't offer any type of certificate or college credit...just straight up learning.

The Teaching Company's courses can be rather expensive (several hundred dollars). But, they do have regular sales and offer a discount for downloadable courses. After signing up for their email newsletter I've received several brief downloadable classes for free.