Biography:Johnny was a child actor with a long career in film ad television before landing the part of Leonard Hofstadter in the TV sitcom "The Big Bang Theory" which ran from 2007 - 2019 an for 12 seasons. Th show was a huge hit and made Galecksi one of the highest paid actors on television alongside his co-stars Jim Parsons and Kaley Cuoco.
Before The Big Bang Theory Galecki was also a regular n the Rosanne Barr series "Rosanne" and has since appeared in its spin-off "The Connors".