Zoe Perry, who plays a bartender at Crowleys, is the real-life daughter of Laurie Metcalf, who plays PJ's aunt.
Johnny Galecki and Laurie Metcalf appear together in "The Big Bang Theory" and "Roseanne."
"The Big Bang Theory"'s Leonard is played by Johnny Galecki, who plays Trouty in "My Boys." Leonard's roommate is Sheldon Cooper; Laurie Metcalf (PJ's aunt) plays Sheldon's mom. Laurie's real-life daughter Zoe Perry (Crowley's bartender) plays Sheldon's mom in the TBBT prequel "Young Sheldon."