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.
Beverly Hills, 90210 focuses on the assimilation of a solid, value-oriented Midwestern family into an accelerated Beverly Hills lifestyle. The show explores the realities and myths of social classes in Beverly Hills while at the same time exposing the strains this lifestyle can put on family relationships.
