The German philosopher Immanuel Kant (I'm a native German-speaker and refuse to mispronounce his name just because it sounds offensive) coined the term 'genius' in the 1700s, defining it as the rare capacity to independently understand concepts that would normally have to be taught by another person.
"The Genius of Charles Darwin" is a three-part television documentary, written and presented by evolutionary biologist Richard Dawkins. It was first shown in August 2008 on Channel 4, and won Best TV Documentary Series 2008 at the British Broadcast Awards in January 2009.
Watching it is a great way to spend a rained-out afternoon. I just did!