Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big Bang Theory.
1989
2011
1997
1993
2000
2018
1997
2019
1989
2005
2008
2001
1997
1988
2013
1998
1990
2009
2017
1987
2000
2003
2004
1994
1996
2016
2020
1991
2001
2019
1999
2005
2010
2007
2005
2004
2005
1999
1990
2020
2015
2018
2003
1981
2004
1999
1991
1988
1989
1992
1990
1990
2007
2018