Let's make this birthday one to remember.

49 years old (Born on April 30, 1975)

American, Actor; He is famous from Roseanne, The Big Bang Theory.

Star/producer/writer Roseanne of "Roseanne" (1988) praises Galecki's "great vulnerability". Johnny considers his late father and his former TV mother-in-law, Roseanne, to be two of his greatest teachers Johnny worked along side Tony Award nominee, Paxton Whitehead, and actress, Dina Waters, to record his first audio theatre CD, a hilarious farce titled The Foreigner, by Larry Shue. The CD was produced and distributed by L.A. Theatre Works, known for bringing together the world’s greatest actors to perform classic and contemporary plays. Close friend of Sara Gilbert. In 1991, he starred in the made-for-TV movie Backfield in Motion (1991) (TV), which co-starred the production team of Roseanne and Tom Arnold. The next year, Galecki joined the cast of "Roseanne" (1988) as Darlene's sensitive and put-upon boyfriend, David.

Johnny has appeared in the Dave Matthews Band music video, Satellite, and a music video for Bob Seger and The Silver Bullet Band, as well.

Johnny’s final appearance (February 18,2007) in the Broadway production of Carter Beene’s gay Hollywood satire, The Little Dog Laughed, was a special performance he and other cast members generously played pro bono for the Actors’ Fund, the national human services organization that helps professionals in the performing arts and entertainment.

Johnny and Chris Kletizier co-wrote the screenplay for Snollygaster, about a group of college students hiding a secret

Brother of Nick Galecki.

Born in Belgium where his father was stationed while serving in the US Air Force. He moved to Chicago when he was 3 years old.

Johnny appeared on the NBC television drama A Family Torn Apart in 1993. He played an adopted son accused of aiding in the murder of his parents. He then went on to play a manic-depressive youth in Without Consent on ABC in 1993

Johnny’s late father, who was an instructor for the visually impaired, blindfolded him as a young boy and had him run his fingers over Braille books to teach him thankfulness and to not take what he had for granted

Johnny made his television debut in the 1987 NBC made-for-TV movie, Time Out For Dad, starring Dick Butkus and Harriet Nelson

Johnny will reunite with former “girlfriend”/”wife,” fellow ABC sitcom, Roseanne, alum, Sara Gilbert, who will guest star in a multiple-episode arc on the CBS comedy series, The Big Bang Theory, in which Galecki co-stars as one of two socially awkward scientists embarking on the “real” world after a voluptuous woman becomes their new neighbor. Gilbert will play the part of a physicist colleague and possible love interest of Johnny’s character.

Although born in Belgum, Johnny Galeki is an American actor. His father was a member of the U. S. Air Force stationed there

Johnny nearly missed his first two previews of the Broadway comedy, The Little Dog Laughed (2006), until CBS reworked the schedule of The Big Bang Theory, a TV pilot in which he co-stars, and was filming.

Johnny’s role in the Broadway play, The Little Dog Laughed (2006-2007), required a full-frontal nudity scene, the first of his acting career

Johnny was sued in a paternity suit on October 6, 2006. A 31 year old woman alleged she had a one-night stand with Galecki eleven years prior, which resulted in the paternity of her son. She sued for back child support in the amount of $500.00 a week. The case was dismissed when the woman failed to appear on the scheduled court date

Johnny’s mother, Mary Lou Galecki, is a mortgage reduction consultant; his late father was a rehabilitation teacher for blind veterans. Johnny is an older sibling to sister, Allison, and brother, Nick

Johnny’s parents denied his request of getting a piercing at the age of ten. He proceeded on his own, piercing his left ear using a safety pin and an ice cube. After the puncture, Johnny’s father remarked, “It looks like a dog gnarled your ear.

Johnny starred in the made for TV movie, Backfield In Motion, with the production team of Roseanne and Tom Arnold in 1991. They offered him a role on their hit television sitcom, Roseanne (ABC), the following year.

At the age of 11, he received a Joseph Jefferson citation nomination for his critically-acclaimed performance as John Henry in The Member of the Wedding.

Johnny was nominated in 1993 through 1995 for the Young Artist Award for his portrayal of David Healy on the ABC television sitcom, Roseanne, winning the award in 1994

Johhny received a Joseph Jefferson Citation nomination at age eleven for his role as John Henry in a Chicago stage production of The Member Of The Wedding.

Johnny, who lived the first three years of his life in Belgium didn’t remember anything about living overseas, except that it was inexplicably orange. As an adult, he found a photo of his family’s home in Belgium. The carpeting was orange.

Johnny loves the 1970s television sitcom, Welcome Back, Kotter

Johnny, along with such celebrity guests as Kevin Bacon and Kyra Sedgwick, Vanessa Williams, Paula Abdul, Sara Ramirez, and Pink, attended the 2007 TV Guide’s post-Emmy party, a French burlesque-inspired gala which was held at the Hollywood hotspot, Les Deux. The red and black dominated event featured white-wigged women dressed as Marie Antoinette scattered around the premises serving champagne and swinging seductively on large chair swings, and a large set up under a tent with plush couches for guest seating providing the stage for musical entertainment, Kanye West, John Legend, and Band From TV (Hugh Laurie on keyboards, Greg Grunberg on drums, James Denton on guitar, and lead singers: Bachelor Bob Guiney and Bonnie Somerville from Kitchen Confidential).

By age 7, he began performing in such prestigious theater productions as "Fiddler on the Roof", "Pippin" and "Galileo", opposite Brian Dennehy at The Goodman Theater in Chicago.

Johnny smokes Parliament Light Brand cigarettes.

Johnny won critical recognition in 1998 for his portrayal of a whiny, unwitting accomplice in the kidnapping of a mob boss kingpin played by Christopher Walken in Suicide Kings. It is the credit he is most proud of.