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Johnny Galecki

4 TV shows · 1988–2019

Johnny Galecki on TV

The Big Bang Theory

as Leonard Leakey Hofstadter

CBS · 2007 · Ended
Roseanne

as David Healy

ABC · 1988 · Ended
Billy

as David MacGregor

ABC · 1992 · Ended
American Dreamer

as Danny Nash

NBC · 1990 · Ended

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