Episode 644 – Paul Karasik
Episode 641 – Peter Stothard
Episode 640 – Cecile Wajsbrot
Episode 632 – Peter Trachtenberg
Episode 626 – Martin Mittelmeier
Episode 624 – Witold Rybczynski
Episode 621 – Mia Wolff
Episode 617 – Benjamin Swett
Episode 616 – Ken Krimstein
Episode 612 – Roland Allen
