In the world of The Big Bang Theory, the chemistry between Johnny Galecki and Kaley Cuoco lit up the screen, but behind the scenes, their personal relationship faced some unexpected challenges. In a ...

Johnny Galecki is an American actor. He rose to fame as David Healy on ABC's Roseanne (1992-1997). Galecki reprised the role on the Roseanne revival (2018) and its spinoff The Conners (2018-2019).

Johnny Galecki and Kaley Cuoco Theo Wargo / Staff They may not have gotten together as Penny and Leonard on-screen until season 3, but the story goes a bit differently for Johnny Galecki and Kaley ...