Began performing in community theater at age 7.
Acted alongside Roseanne and Tom Arnold in the TV movie Backfield in Motion in 1992, which led to him being cast on Roseanne's show.
When he first appeared on Roseanne, his character was given the name "Kevin" although he was supposed to be named "David." He already played a character named "David" on another show, Billy, so the producers changed it, and then changed it back when Billy was canceled.
Appeared in the Dave Matthews Band video for "Satellite."
Made his Broadway debut in The Little Dog Laughed on November 13, 2006, where he appeared on stage totally nude.
Was a finalist in PETA's 2012 Sexiest Celebrity Vegetarian contest.
Johnny Galecki Relationships:
Mary Lou Galecki - Mother
Kaley Cuoco - Ex-significant Other
Allison - Sister
Richard Galecki - Father
Kelli Garner - Significant Other
Nick Galecki - Brother
Johnny Galecki Awards:
2011 Emmy: Outstanding Lead Actor in a Comedy Series - Nominee
2011 Screen Actors Guild Awards: Outstanding Performance by an Ensemble in a Comedy Series - Nominee
2012 Screen Actors Guild Awards: Outstanding Performance by an Ensemble in a Comedy Series - Nominee
2012 Golden Globe: Best Performance by an Actor in a Television Series - Comedy or Musical - Nominee