John Galecki – now
For his portrayal of Leonard Hofstadter, John Galecki was nominated for both a Golden Globe Award and Primetime Emmy in 2011. Before which, he had already worked on several other roles, but not one of them hit it off for him as much as his work on TBBT. His performance was so impressive, in fact, that while working on the eighth season of the series, he managed to get his salary bumped from $350,000 per episode to $900,000 per episode. This made him one of the highest paid actors in Hollywood at the time.