Did you wonder how Christopher Nolan pulled off those tesseract scenes from Interstellar, or why he decided to keep a major star's presence in the film a secret? The usually tight-lipped filmmaker sat down with fellow director Rian Johnson (Looper, Brick) to discuss those topics and more last month following a screening of Interstellar at Santa Monica's Aero Theater.

Luckily Sound Cloud user Big Kahoona was there to record and post the half hour talk.

The film, which stars Matthew McConaughey, Anne Hathaway, Jessica Chastain and Michael Caine, opened on Nov. 5, 2014, and grossed $672 million worldwide.

(via Collider)