Johnny Galecki Profile
Johnny Mark Galecki is an American actor best known for his roles as Leonard Hofstadter in The Big Bang Theory, for which he received a Primetime Emmy Award nomination, and David Healy in Roseanne and The Conners on ABC. Galecki also appeared in the films Prancer, Suicide Kings, I Know What You Did Last Summer, Bookies, In Time, and Rings, in addition to National Lampoon’s Christmas Vacation.
Johnny Galecki Age
Galecki is 46 years old as of 2021. He was born John Mark Galecki on 30 April 1975 in Bree, Belgium. He celebrates his birthday on 30 April.

Johnny Galecki Height
Galecki stands at a height of 5 feet 5 inches (1.65 m).
Johnny Galecki Family
Galecki was born in America to Polish, Irish, and Italian parents. His mother, Mary Louise (Mary Lou) Noon, worked as a mortgage consultant, and his father, Richard Galecki, served in the United States Air Force and worked as a rehabilitation teacher in Belgium.
Galecki is the eldest of three children, with an older sister, Allison, and a younger brother, Nick, who he describes as a “mechanical genius” in the automotive industry. Galecki was raised in Oak Park, Illinois. He dropped out of school after the eighth grade and only attended high school for one day. Galecki recalled his childhood relationship with his mother in an interview with New Zealand radio station ZM.
Johnny Galecki Wife
Galecki dated his Roseanne (and later The Big Bang Theory) co-star Sara Gilbert as a teenager (their characters also dated). Gilbert discovered she was a lesbian during their relationship. They are still close friends.
Quick Facts About Johnny Galecki
Age | 46 years old |
Nationality | American |
Spouse | Alaina Meyer |
Net Worth | $25 million |
Galecki dated co-star Kaley Cuoco for about two years until December 2009 while working on The Big Bang Theory, and the two also played a couple on the show. Cuoco told CBS Watch that they are still on good terms after their relationship ended. Galecki began dating Alaina Meyer in August 2018. Avery, their son, was born in November 2019. Galecki and Meyer divorced in November 2020, according to reports.
Johnny Galecki Net Worth
Galecki has an estimated net worth of $25 million.
Johnny Galecki House
Galecki purchased the property from Jason Statham in the summer of 2011 for $7.325 million. The just over 5,300-square-foot compound exudes relaxed glamour, with five bedrooms and 5.5 bathrooms spread across the three-bedroom main house and a two-bedroom guesthouse.
The electronic driveway gates open to a brick-paved motor court and a two-car garage, while the pedestrian gate, an arched carved wood door set into a vine-encrusted wall, leads to a semi-tropical fantasia with swooping, tile-accented stairways leading down to the multi-winged home with its white stucco exterior and traditional clay tile roof.
Johnny Galecki Roseanne
Galecki made his acting debut with JoBeth Williams and future Roseanne co-star John Goodman in the 1987 CBS miniseries Murder Ordained. During his tenure on Billy, Galecki began appearing as the younger brother of Mark Healy, who began a relationship with Darlene Conner, on the hit ABC sitcom Roseanne.
In his first appearance, he was introduced as Kevin Healy, but his name was soon changed to David. After a few more guest appearances, Galecki was named a permanent Roseanne cast member beginning in the fall of 1992, following the cancellation of Billy.
He would play David Healy until the end of Roseanne’s run in 1997, marrying Darlene and having two children with her. On The Big Bang Theory, Galecki’s character would also have a brief relationship with Gilbert’s character.
Galecki appeared in one episode of ABC’s Roseanne revival in 2018. Despite its high ratings, the show was canceled after Roseanne Barr sent a racist tweet about Valerie Jarrett. Roseanne was replaced by a new show, The Conners, which debuted in October 2018 with the same cast but without Barr. Galecki has appeared as David on The Conners on occasion.
Johnny Galecki I Know What You Did Last Summer
Julie James and her friends Ray Bronson, Helen Shivers, and Barry Cox drive to the beach on July 4, 1996 in Southport, North Carolina. They hit a pedestrian while driving along a coastal byway. Max Neurick, Julie’s friend, passes them on the road and then exits.
The group decides to dispose of the body in the water and never talk about what happened. Julie receives a letter with no return address, stating, “I know what you did last summer!” a year later, in 1997.
Helen witnesses Barry’s murder on her beauty pageant’s balcony; a killer lures him into an alley and murders him. Julie flees after noticing Ray’s boat is named Billy Blue. Ray is knocked unconscious by a fisherman, who invites Julie to hide on his boat. He pursues Julie below deck, where she discovers Helen and Barry’s bodies in the icebox.
Johnny Galecki Blossom
Galecki appeared as Jason in the pilot episode of the American sitcom that aired for five seasons on NBC Blossom. Blossom Russo, an Italian-American adolescent, is the focus of the series. It started with Blossom’s mother leaving the family to pursue her own life and career, and it centered on the family’s attempts to adjust.
Ted Wass played Blossom’s father, Nick, an overprotective, somewhat conservative session musician who was frequently between gigs and tours. Tony, her older brother, was a recovering alcoholic and drug addict who became a paramedic.
Joey, the middle child, was the stereotypical “dumb jock,” famous for the exaggerated delivery of his catchphrase “Whoa!” Blossom frequently sought advice from celebrities such as Mr. T, Hugh Hefner, Phylicia Rashad, David Spade, ALF, Will Smith, and God in fantasy scenes.
Melissa Manchester played Blossom’s mother, Maddy Russo. Blossom’s best friend Six Lemeure was also influential in her life. Six, a particularly quick talker, was best known for her proclivity to ramble.
Johnny Galecki Commercial
He reprised the role during the play’s Broadway run at the Cort Theatre in late 2006 and early 2007. “At its core, the play is about what we all sacrifice to be successful, whatever our careers or goals,” Galecki said at the time. Galecki won a Theater World Award for his performance in the play, which was a commercial and critical success.
Johnny Galecki Prancer
Galecki appeared as Billy Quinn in the 1989 American-Canadian fantasy drama film Prancer. Jessica Riggs, eight, is raised by her older brother, Steve, and her widowed father, John. She sees a plastic reindeer fall from a Christmas decoration hung above the town’s main street.
She moves him to a shed and nurses him back to health, afraid that John will find him. She hands him over to a mall Santa, who hands over a Polaroid picture and a letter to the real Santa. The pastor reads an article about her written by the local newspaper editor during his sermon. At the end of the film, she sees Santa’s sleigh arrive to pick him up.
Johnny Galecki The Big Bang Theory
Galecki played as Dr. Leonard Hofstadter in the sitcom The Big Bang Theory since 2007. Dr. Leonard Leakey Hofstadter, Ph.D., is an experimental physicist at the California Institute of Technology who previously roomed with Sheldon Cooper in Apartment 4A and now lives there with his wife Penny, as well as in Penny’s apartment Apartment 4B.
He, along with Sheldon, is one of The Big Bang Theory’s main male protagonists. Leonard was born in New Jersey and attended Princeton University, where he received his doctorate with a Dissertation of the Year award for experimental particle physics when he was twenty-four years old.
He and Leonard are best friends, having lived with Sheldon for a decade as of Season 6; however, Leonard can become very agitated by many of his eccentricities and often feels obligated to explain Sheldon’s behavior and serve as a Mediation|mediator between him and other people in situations – he’s been described as the series’ straight man.
While Leonard, like his geek friends and fellow scientists, is somewhat socially inept, Leonard wishes to be accepted outside of his social group. Leonard is more adaptable than his companions, and he is more willing to try new things.
He appears to be best suited as the group’s leader, with Sheldon remarking that Leonard is the “Kirk” of their landing party. Until Shamy arrived, the romance between him and his neighbor Penny, with their on-again, off-again relationship, was the major source of drama.
Johnny Galecki TV Shows
- 2018–2019 – The Conners
- 2016 – Lip Sync Battle
- 2011 – Entourage
- 2009 – Family Guy
- 2007–2019 – The Big Bang Theory
- 2006–2007 – My Boys
- 2006 – American Dad!
- 2005 – My Name Is Earl
- 2005 – Hope & Faith
- 2004 – LAX
- 2000 – Batman Beyond
- 2000 – The Norm Show
- 1993 – Civil Wars
- 2018 – Roseanne
- 1992 – Billy
- 1991 – Blossom
- 1990–1991 – American Dreamer
- 1990 – Blind Faith
Johnny Galecki Movies
- 2019 – A Dog’s Journey
- 2017 – Rings
- 2016 – The Cleanse
- 2013 – CBGB
- 2011 – In Time
- 2009 – Table for Three
- 2008 – Hancock
- 2007 – Who You Know
- 2005 – Happy Endings
- 2004 – Chrystal
- 2004 – White Like Me
- 2003 – Bookies
- 2001 – Morgan’s Ferry
- 2001 – Vanilla Sky
- 2000 – Playing Mona Lisa
- 2000 – Bounce
- 1998 – The Opposite of Sex
- 1997 – Bean
- 1997 – Suicide Kings
- 1997 – I Know What You Did Last Summer
- 1996 – Murder at My Door
- 1994 – Without Consent
- 1993 – A Family Torn Apart
- 1991 – Backfield in Motion
- 1989 – Prancer