Musk is a funny guy, really smart, not always right. And he really screwed the pooch when he smoked a blunt on the show -- luckily he'd already overshadowed that with his tweets against the SEC. :^)
The other episodes that really knock it out are Rogan's interview with Robert Schoch, and a couple he did with the late John Anthony West (before he was late).
Check out the ones with Randall Carlson...notably the first and second interviews with Carlson. You will come away with a different sense of the Earth’s climate history.