My Becky Chambers panel was her and her mom (an astrobiologist!) talking about writer-scientist collaboration -- it was really great.

I remember really enjoying Marie Brennan on a panel, too. It was her and Seanan McGuire, and they made a really fun duo. (I prefer them as panelists to their actual books, I find.)

Looking forward to your write-up of the Tchaikovsky panel, then! (I also need to go back and give his books another shot, because I think they will be very much my thing once/if I manage to get into them.)