I recommend the Mental Floss channel largely do to my interest in trivia, and the short, bite-sized nature of the videos, presented in rapid-fire format by... John Green.
Yes, that John Green. Not being a big fan of his books (they are one of the reasons this blog exists; please don't take this too personally, Mr. Green, it is a matter of taste as much as anything), I was dismayed to find this, but he is perfect for the job. His quick delivery and manner really serve the videos well. He comes across knowledgeable and not too smug.
Find the YouTube channel here.
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