Johnny Galecki. He is known for playing David Healy in the ABC sitcom Roseanne from 1992 - 1997 and Dr. Leonard Hofstadter in the CBS sitcom The Big Bang Theory since 2007.
Johnny Galecki has appeared in just one American sitcom.
Johnny Galecki. He is known for playing David Healy in the ABC sitcom Roseanne from 1992 - 1997 and Dr. Leonard Hofstadter in the CBS sitcom The Big Bang Theory since 2007.

Generate a claim based on the evidence above which would have veracity refuted
Johnny Galecki has appeared in just one American sitcom.
Johnny Galecki. He is known for playing David Healy in the ABC sitcom Roseanne from 1992 - 1997 and Dr. Leonard Hofstadter in the CBS sitcom The Big Bang Theory since 2007.

Generate a claim based on the evidence above which would have veracity refuted
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Johnny Galecki has appeared in just one American sitcom.
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