Watch The Big Bang Theory Podcast

Science consultant David Saltzberg joins host Jessica Radloff to break down the final episode of Season 2.

Back to help break down the episode where Stuart goes on his second date with Penny is Kevin Sussman, who plays the hilarious Stuart Bloom.

Jodi Lyn O'Keefe, who was originally cast as the female lead in the pilot episode, shares what it was like coming back as a guest star in Season 2.

Talking about his very first time appearing on The Big Bang Theory is Kevin Sussman, who plays the one and only Stuart Bloom.

Director Mark Cendrowski is back, this time to discuss The Dead Hooker Juxtaposition, starting with how they came up with the episode's title.

Back to help break down the episode where Penny contemplates starting her own business, Penny Blossoms, is executive producer Lee Aronsohn.

Joining host Jessica Radloff to break down the first train episode of The Big Bang Theory is set decorator John Shaffner.

Set decorator Ann Shea joins host Jessica Radloff to help break down what came to be known as "the couch episode" of The Big Bang Theory.

The one and only Christine Baranski discusses her first appearance as Leonard's mom Beverly on The Big Bang Theory.

Mark Sweet warmed up audiences for The Big Bang Theory from day one, and the comedian tells host Jessica Radloff why the show was special from the very beginning.

Back to break down another episode is John Ross Bowie, who played Barry Kripke across 11 seasons of The Big Bang Theory. John discusses why he believes the show had such a strong female viewership and how the character of Penny became all of us.

Helping to break down his very first episode on The Big Bang Theory is John Ross Bowie, who played Barry Kripke. John reveals that he actually auditioned for the role of Leonard initially.

Showrunner Steve Molaro joins Jessica to discuss the episode that Steve claims has one of the series' best storylines. He recalls the vibration of the stage on the night of the taping when Penny gives Sheldon the napkin signed and used by Leonard Nimoy.

Director Nikki Lorre is back to talk about what host Jessica Radloff calls "one of her favorite Big Bang episodes of all time." Nikki recalls Sara Rue's brilliance in the role of Stephanie and shares why her character wasn't in any future episodes.

Director Anthony Rich is back to discuss this hilarious episode, which is rich in "Shenny" scenes. Host Jessica Radloff and Anthony talk about why scenes with Sheldon and Penny together onscreen are always among their favorites.

Sara Rue, aka Dr. Stephanie Barnett, joins host Jessica Radloff to break down The Lizard-Spock Expansion. After revealing that she once auditioned for the role of Penny, Sara shares why she was so excited to play a doctor on The Big Bang Theory.

Writer and executive producer Dave Goetsch is back, and he's helping break down The Panty Pinata Polarization.

She played physics grad Ramona Nowitzki, who became Sheldon's stalker/platonic girlfriend on the show, and now Riki Lindhome is helping break down this hilarious episode.

Executive producer/writer Lee Aronsohn breaks down the episode where Sheldon's friends stage a driving intervention, shares if Sheldon was on the spectrum, why this feels like the "true" Sheldon, and why "Shenny" scenes were the easiest to write.

Kunal Nayyar shares how he prepared for the show's live tapings each week -- by taking a nap -- and he reveals how Jim Parsons woke him up. He also discusses his first experiences with fame in the early days of the show.

Here to discuss one of Kaley Cuoco's favorite episodes of The Big Bang Theory is the woman who got all the dirt: hairstylist Faye Woods. Faye recalls the infamous scene from this episode where Kaley has a Cheeto in her hair and shares how it came to be.

Eric Kaplan breaks down the Renaissance Fair episode and shares why asking if Penny and Leonard end up together helped him land the job. He also revisits the first joke he wrote for the show and reveals the hilarious song he once taught the cast and crew.

Helping break down the first episode of Season 2 is co-creator Chuck Lorre. Onscreen during this episode, Leonard and Penny face the aftermath of their first date. Chuck reveals that had recently learned that Kaley Cuoco and Johnny Galecki were dating.