Worth watching, more than once: Human Intervention Training with Zak Schwartz and Brad Lerch (2016?)  

I’ve really liked this video for a long time and it’s been calling to me again lately. I believe having some perspective on size and space of the solar system is useful. How Far Are The Nearest Stars?

Still fun and heart-warming. Where the Hell is Matt? 2012 (highly recommended) Where the Hell is Matt? 2008 Where the Hell is Matt? 2006 How the Hell Did Matt Get People to Dance With Him?