What a great request, thank you @americson !!! A few of my favorites are behind a paywall now, but these are still available (I believe). Not ranked.
  1. President Barack Obama
    POTUS. In Maron's garage. Regardless of your politics, you don't hear a sitting President have a dialogue like this. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=377731850
  2. Julia Louis Dreyfus
    I had never heard JLD interviewed long-form, she's just so incredible. Well worth the listen. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=367247902
  3. Billy Crystal
    Great interview with a comedy/acting legend. The first half is a lot of old-times recollection, the second half is terrific about his acting career and Oscar hosting. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=375064907
  4. Lorne Michaels
    Anyone who knows Maron or the WTF Podcast knows that he's had an axe to grind about not getting a gig on SNL a looooong time ago and brings it up constantly - this buries the hatchet. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=377731849
  5. Chelsea Handler
    Chelsea is whip-smart and hilarious AF, and she puts Marc on the defensive and it's excellent. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=370799176
  6. Louis C.K.
    Louis and Marc go way back, waaaay back. This isn't the episode that was named like "Best Podcast Ever" by somebody, but it's good. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=367247901
  7. Kristen Wiig
    Interesting background story on one of my favorite SNLers and great comedic actresses. https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=374267553
  8. Roseanne Barr
    Haven't heard from her in forever, it was interesting to hear what she's been up to and https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=373524889
  9. Robert Trujillo, Flea, and Aziz Ansari
    Great combo with details around Trujillo joining Metallica, Flea and the Red Hot Chili Peppers early days, and of course Aziz! https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=357419785
  10. Lin-Manuel Miranda
    I have listened to this one yet, but I know the Li.st audience... https://itunes.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?mt=2&i=377818791