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Kaley Cuoco, Johnny Galecki, and Kunal Nayyar in The Big Bang Theory (2007)Neil Gaiman, Johnny Galecki, Simon Helberg, Kevin Sussman, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Johnny Galecki in Roseanne (1988)Johnny Galecki in Roseanne (1988)Peter MacNicol, Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Kaley Cuoco, Johnny Galecki, and Parvesh Cheena in The Big Bang Theory (2007)Kaley Cuoco, Johnny Galecki, and Bob Stephenson in The Big Bang Theory (2007)Johnny Galecki and Bill Gates in The Big Bang Theory (2007)Johnny Galecki and Aaron Takahashi in The Big Bang Theory (2007)Mayim Bialik, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki and Steve Harvey in The Late Late Show with James Corden (2015)Mayim Bialik, Kaley Cuoco, Johnny Galecki, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Jim Parsons, Melissa Rauch, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Johnny Galecki in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Melissa Rauch, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki and Melissa Rauch in The Big Bang Theory (2007)Lukas Haas, Nick Stahl, and Johnny Galecki in Bookies (2003)Clara Bryant, Billy Connolly, Johnny Galecki, Marie Marshall, and Natanya Ross in Billy (1992)Billy Connolly, Johnny Galecki, and Marie Marshall in Billy (1992)Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)Kaley Cuoco, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)Kaley Cuoco and Johnny Galecki in The Big Bang Theory (2007)Mayim Bialik and Johnny Galecki in The Big Bang Theory (2007)Johnny Galecki, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Johnny Galecki, Simon Helberg, and Kunal Nayyar in The Big Bang Theory (2007)Johnny Galecki, Simon Helberg, and Kunal Nayyar in The Big Bang Theory (2007)Kaley Cuoco and Johnny Galecki in The Big Bang Theory (2007)Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)Mayim Bialik, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)Mayim Bialik and Johnny Galecki in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Kevin Sussman, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Kaley Cuoco, Johnny Galecki, Simon Helberg, and Kunal Nayyar in The Big Bang Theory (2007)Kaley Cuoco, Johnny Galecki, Simon Helberg, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Kevin Sussman, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Mayim Bialik, Kaley Cuoco, Johnny Galecki, Simon Helberg, Jim Parsons, and Kunal Nayyar in The Big Bang Theory (2007)Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)Johnny Galecki and Jim Parsons in The Big Bang Theory (2007)Kaley Cuoco, Johnny Galecki, and Jim Parsons in The Big Bang Theory (2007)
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Biography

John Mark Galecki was born in Bree, Belgium, to American parents; his father was stationed there while serving in the U.S. Air Force. When he was three years old, his family moved to Chicago, Illinois, where he grew up with his parents, Mary Lou and Richard Galecki, and siblings, sister Allison (1980) and brother Nick (1982). His father was of ... See full bio »
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