who is johnny galecki on big bang theory
Johnny Galecki John Mark Galecki (born April 30, 1975)[1] is an American actor. He is known for playing David Healy in the ABC sitcom Roseanne from 1992â€“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).
Kunal Nayyar Kunal Nayyar (/kʊˈnɑːl ˈnaɪ.ər/; born 30 April 1981) is an English-born Indian actor known for his role as Rajesh Koothrappali in the CBS sitcom The Big Bang Theory.