Big Bang/Conners Overlap

Jack McBrayer, Katey Segal, Johnny Galecki,
Kaley Cuoco, and Keith Carradine at Leonard
and Penny's wedding on TBBT.

I stopped watching The Big Bang Theory around season 8. It was getting repetitive after Howard and Bernadette got married and then they jumped the shark by having her get pregnant, oh, and moving Sheldon and Amy in together. But lately I started watching episodes on HBO Max because I loved the characters so much. Interestingly, there was a great deal of actor overlap between TBBT and The Conners, a show I did watch until the very last episode. The most obvious case of double casting was Sara Gilbert and Johnny Galecki who starred as Darlene and David, high school sweethearts later divorced parents on both Roseanne and The Conners. On TBBT, Galecki was the top-billed Leonard Hofstedder and Gilbert guest-starred in a few episodes as snarky fellow scientist Leslie Winkle. Also Laurie Metcalf won several Emmys for playing Roseanne's eccentric sister Jackie and appeared as Sheldon's religious mother Mary. But what I did not know was Katey Segal (Futurama, Married with Children) played both Penny's mother and Darlene's stepmother. So that means she was Johnny Galecki's mother-in-law and ex-step-mother-in-law. To add another degree of connection, Katy also played Kelly Cuoco's mom on Eight Simple Rules (which I've never watched.) Laurie and Katy guest starred on the episode where Leonard and Penny had a second wedding ceremony.