Johnny Galecki: $8million

The first of two stars of US sitcom 'The Big Bang Theory' to feature on the list, actor Johnny Galecki has reaped the rewards of starring in a show that comfortably pulls in an audience of 15 million per episode.

And this may just be the start for the 37-year-old too; he'€™s set to switch to the silver screen and appear in 'CBGB', a movie based around the famous New York City club.