So I have a new favorite site to share when you want to learn a little something.
TED Talks shares videos of talks from the Technology Entertainment and Design (TED) Conferences, held across the world. TED's focus is "ideas worth spreading," and so all of the videos are free online. The speakers come from all disciplines, and their lectures cover a variety of topics. The talks are grouped into a variety of different themes. You can hear from Bono, Bill Clinton, JJ Abrams, or John Wooden, or any number of amazing other people.
The first TED talk that I watched was from Aimee Mullins about her 12 pairs of legs. She offers a really fascinating look at prosthetic legs as art and beauty.
If you have the chance, definitely check it out.