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Birth Name: John Mark Galecki
Birthday: April 30th, 1975
Birthplace: Bree, Belgium
Height: 5'5"
Currently resides in: Los Angeles; Chicago
Siblings: one younger brother, Nick; one younger sister, Allison
Partner(s): Laura Harris; Kaley Cuoco (2007-2009)
Did you know: Johnny is a vegetarian?

A LITTLE MORE...

Johnny Galecki is an American actor. Though of American nationality, he was born in Belgium when his father was stationed there while serving in the U.S. Air Force. Johnny started acting in 1987, and in 1995, made an appearance in the Dave Matthews Band video for Satellite. Roseanne herself hand-picked Johnny to be on her show as a one-off appearance, but she liked him so much, he became a regular character in later seasons.

"I'm not dead! We should never stop learning. We should never stop absorbing."

Johnny is a self-taught cellist whose hobbies include traveling, painting and hiking. On not being on Twitter, Johnny had this to say:

"I don't understand the current frame of mind in our society that seems to say that any action is not of value until it's broadcast somehow."

For more in-depth information, check out Wikipedia and IMDb