Johnny Galecki

Johnny GaleckiJohnny Galecki is a Belgian-born American actor, best known before The Big Bang Theory for his role as David Healy in "Roseanne". Galecki's other television series credits include a recurring role in "My Boys" and guest appearances in "Hope and Faith" and "My Name is Earl."

Galecki's feature film credits include  "Hancock", "The Opposite of Sex", "Crystal," "Bookies," "Vanilla Sky," "Bounce," "Playing Mona Lisa," "The Opposite of Sex," "I Know What You Did Last Summer," "Suicide Kings" and "National Lampoon's Christmas Vacation."

Galecki's stage credits include "Galilelo", "The Drawer Boy" and "Pot Mom". He received a 2007 Theater World Award for Outstanding Broadway Debut for "The Little Dog Laughed and was nominated for a Joseph Jefferson Award for "The Member of the Wedding".

For his work as Leonard Hofstadter on The Big Bang Theory, he has been nominated for a Golden Globe award and a Primetime Emmy.


  • As a star on Roseanne, Johnny Galecki worked with Sara Gilbert and Laurie Metcalf, both of whom have appeared on The Big Bang Theory. Chuck Lorre, The Big Bang Theory's co-creator and executive producer, was a writer on Roseanne for a time.