[horsawlarway]

I find podcasts with a good bit of humor fill this spot for me personally. Here's a couple that I regularly listen to, degree of "intellectualness" varies, but they all have episodes that require attention and make me think.

Radiolab - Very well known, you've probably already listened. I like it because the hosts are genuine and they tell good stories. Older episodes hit the spot better than newer for me.

The Infinite Monkey Cage - Science based panel show. If you like things like QI, this is similar, but less gimmicky. Real science discussions, plenty of jokes.

Judge John Hodgman - This isn't "sciency" but it does make me consider my position on social norms, while also being pretty dang entertaining.

Revolutions (Mike Duncan) - This is a fantastic history based podcast. The first episode or two in a series are always dry as he paints an overview of what's coming, but it's worth chugging through. I strongly recommend his third series on the French revolution, Mike does a fantastic job making history about the people and not about fluff like dates/locations/memorized crap. This podcast could have replaced most of my history classes in school and I'd be a better person for it.