The Official Big Bang Theory Podcast

Brian Thomas Smith joins Jessica Radloff to revisit his nine-season run as Zack Johnson, Penny’s lovable but hilariously clueless boyfriend on “The Big Bang Theory.” He shares behind-the-scenes stories from the fan-favorite Justice League Halloween episode, what it was like being the “new kid” alongside Mayim Bialik, and the kindness the cast showed him from day one. Plus, Brian reveals the storyline for an episode that was scrapped after Kaley’s horseback riding accident—and what fans never got to see. All episodes of “The Big Bang Theory” are available on HBO Max.

© 2026 WBEI. THE BIG BANG THEORY characters and elements are © & TM WBEI.
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Mayim Bialik joins Jessica Radloff to look back on her first season as Amy Farrah Fowler on “The Big Bang Theory.” She shares how Amy evolved over Season 4, the surprising ways she and her character are alike beyond their scientific backgrounds, and how she handled fans who initially opposed Amy and Sheldon’s relationship. Plus, Mayim reflects on what it was like sharing the stage with Jim Parsons for so many years and watching one of television’s most iconic partnerships come to life.

All episodes of “The Big Bang Theory” are available on HBO Max. © 2026 WBEI. THE BIG BANG THEORY characters and elements are © & TM WBEI.
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Kunal Nayyar returns to break down Raj’s Season 4 journey, from the cracks forming in his beloved bromance with Howard to Raj’s unrequited feelings for Bernadette and the shocking season finale that left him waking up next to Penny. Kunal shares why he believes “The Big Bang Theory” reached a new level of success with the additions of Bernadette and Amy, and he reveals how Raj and Howard’s friendship was inspired by his real-life friendships growing up in India. Plus, Kunal teases his return to the “Big Bang” universe in “Stuart Fails to Save the Universe.”

All episodes of “The Big Bang Theory” are available on HBO Max. © 2026 WBEI. THE BIG BANG THEORY characters and elements are © & TM WBEI.
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Season 4 marked a turning point for “The Big Bang Theory” with the additions of Amy Farrah Fowler and Bernadette Rostenkowski, expanding the core cast to seven. Director Anthony Rich joins host Jessica Radloff to discuss the challenges — and unexpected rewards — of bringing the larger ensemble together. They also revisit fan-favorite episode “The Love Car Displacement,” revealing how the memorable road trip came to life and sharing the hilarious scene that ultimately ended up on the cutting room floor. All episodes of “The Big Bang Theory” are available on HBO Max.

© 2026 WBEI. THE BIG BANG THEORY characters and elements are © & TM WBEI.
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If you're enjoying the Big Bang Theory Podcast, we think you'll love the Stuart Fails to Save the Universe Official Podcast.

Each week, Felicia Day and Wil Wheaton go deep on the latest episode of Stuart Fails to Save the Universe, breaking down the multiverse chaos Stuart Bloom accidentally unleashed, the alternate-universe The Big Bang Theory characters showing up along the way, and what it all means for fans who've loved this world for over a decade. Expect Easter egg hunts, character deep dives, guest appearances from the cast and crew, and the kind of insider access that comes from knowing this universe from the inside out.

Listen to Episode 1, "Spoiler: Gary Dies (with Chuck Lorre, Bill Prady, Zak Penn & John Ross Bowie)" now, and follow Stuart Fails to Save the Universe Official Podcast wherever you get your podcasts.
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