[PAR] [TLE] Johnny Galecki [SEP] John Mark Galecki (born April 30, 1975) is an American actor.  He is known for playing David Healy in the ABC sitcom "Roseanne" from 1992 to 1997 and Dr. Leonard Hofstadter in the CBS sitcom "The Big Bang Theory" since 2007.  Galecki also appeared in the films "National Lampoon's Christmas Vacation" (1989), "Prancer" (1989), "Suicide Kings" (1997), "I Know What You Did Last Summer" (1997), "Bookies" (2003), and "In Time" (2011). [PAR] [TLE] Rings (2017 film) [SEP] Rings is a 2017 American supernatural psychological horror film directed by F. Javier Gutiérrez, written by David Loucka, Jacob Aaron Estes and Akiva Goldsman and starring Matilda Lutz, Alex Roe, Johnny Galecki, Aimee Teegarden, Bonnie Morgan and Vincent D'Onofrio.  It is the third film in "The Ring" series.  The film takes place thirteen years after the events of the 2002 film.
[PAR] [TLE] Johnny Galecki [ SEP ] John Mark Galecki ( born April 30 , 1975 ) is an American actor . He is known for playing David Healy in the ABC sitcom " Roseanne " from 1992 to 1997 and Dr. Leonard Hofstadter in the CBS sitcom " The Big Bang Theory " since 2007 . Galecki also appeared in the films " National Lampoon 's Christmas Vacation " ( 1989 ) , " Prancer " ( 1989 ) , " Suicide Kings " ( 1997 ) , " I Know What You Did Last Summer " ( 1997 ) , " Bookies " ( 2003 ) , and " In Time " ( 2011 ) . [PAR] [TLE] Rings ( 2017 film ) [ SEP ] Rings is a 2017 American supernatural psychological horror film directed by F. Javier Gutiérrez , written by David Loucka , Jacob Aaron Estes and Akiva Goldsman and starring Matilda Lutz , Alex Roe , Johnny Galecki , Aimee Teegarden , Bonnie Morgan and Vincent D'Onofrio . It is the third film in " The Ring " series . The film takes place thirteen years after the events of the 2002 film .
Who is the actor in "Rings", "Roseanne", and "The Big Bang Theory"?
Who is the actor in " Rings " , " Roseanne " , and " The Big Bang Theory " ?
Johnny Galecki
Johnny Galecki