When you consider the fact that Johnny Galecki starred as experimental physicist Leonard Hofstadter for 12 seasons and the same number of years on "The Big Bang Theory," it's probably not a huge ...

Johnny Galecki is an American actor ... He is best known for playing Leonard Hofstadter on The Big Bang Theory (2007-2019). Galecki earned an Emmy Award nomination for his performance on the ...

The Big Bang Theory star, Johnny Galecki. You’ll probably recognise him as Leonard Hofstadter, lovably geeky physicist in the ever-popular Big Bang Theory. But in real life, Johnny Galecki is a ...

American sitcom The Big Bang Theory centers around friends Leonard Hofstadter (Johnny Galecki), Sheldon Cooper (Jim Parsons), Penny Teller (Kaley Cuoco), Howard Wolowitz (Simon Helberg ...