‘The Big Bang Theory’: Penny and Leonard Renew Their Vows in the Season 10 Premiere

The Big Bang Theory
Photo: Monty Brinton/Warner Bros. Entertainment Inc
"The Conjugal Conjecture" -- Pictured: Mary (Laurie Metcalf), Amy Farrah Fowler (Mayim Bialik), Sheldon Cooper (Jim Parsons), Alfred (Judd Hirsch), Beverly (Christine Baranski), Leonard Hofstadter (Johnny Galecki), Penny (Kaley Cuoco), Wyatt (Keith Carradine), Susan (Katy Sagal), Randall (Jack McBrayer), Bernadette (Melissa Rauch), Howard Wolowitz (Simon Helberg), Rajesh Koothrappali (Kunal Nayyar) and Stuart (Kevin Sussman). After Sheldon's mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny's family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan (Katey Sagal), and her drug dealing brother, Randall (Jack McBrayer), on the 10th season premiere of THE BIG BANG THEORY, Monday, Sept. 19 (8:00-8:30 PM, ET/PT), on the CBS Television Network. Dean Norris guest stars as Colonel Williams, an Air Force Representative from the Department of Materiel Command. Christine Baranski, Laurie Metcalf, Judd Hirsch and Keith Carradine return. . © 2016 WBEI. All rights reserved.

With impending nuptials, a pregnancy and a possible parental hookup, the 10th season of TV’s No. 1 comedy has many big bangs ahead. “We pick up the morning after Leonard’s father [Judd Hirsch] and Sheldon’s mother [Laurie Metcalf] left together to head back to the hotel,” executive producer Steve Molaro says, referring to last season’s cliffhanger.

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Leonard (Johnny Galecki) and Penny (Kaley Cuoco) will move forward with their second wedding ceremony, and look for a familiar TV face to appear in the season premiere when Katey Sagal (Sons of Anarchy) guest stars as Penny’s mother. It’s not the first time the actresses have played this familial relationship: They costarred on the 2002–05 ABC sitcom 8 Simple Rules.

The Big Bang Theory

Jack McBrayer (left) and Katey Sagal (second from left) play Penny’s brother, Randall, and mother, Susan. Keith Carradine (right) returns as her father, Wyatt.

Howard (Simon Helberg) has bigger problems, though, when the military starts sniffing around the guidance system he’s developing. “Dean Norris [Breaking Bad] will be playing the Air Force colonel, and he’s been amazing,” Molaro teases. “He is bringing a definite intimidation factor with him, and he’s very good at it.”

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Howard’s home life is also rocky, since Bernadette (Melissa Rauch) is having mixed feelings about being pregnant. “Bernadette wasn’t the most gung-ho about having kids in the first place,” Rauch says, “so she’s adjusting to her new reality and navigating her conflicting emotions. The hormones aren’t helping to bring out Bernadette’s Zen qualities, if those even exist.” Thankfully, Raj (Kunal Nayyar) comes to the rescue. “Raj’s bedside manner is coming in handy, which is a lot of fun to explore,” Rauch promises.

The Big Bang Theory

Dean Norris plays an Air Force colonel who’s very interested in Howard’s new guidance system.

And, of course, the unorthodox relationship of Sheldon (Jim Parsons) and Amy (Mayim Bialik) will continue to have ripple effects for the entire gang. Molaro teases that he and his writers “will dig into it hard-core starting around Episode 4, and we’re going to be taking a good look at everyone’s living arrangements.”

The Big Bang Theory, Season Premiere, Monday, September 9, 8/7c, CBS.