He grew up in a very rural, desolate part of Queensland. His father was a professional sheep-shearer.
Although born and raised in Australia, he has never played an Aussie in an American production, thanks to his ability to speak flawlessly in American dialects.
Born one day before the incident at Chappaquiddick where Senator Ted Kennedy drove off a bridge into a shallow pond, resulting in the death of Mary Jo Kopechne. Clarke played Kennedy in the film Chappaquiddick (2017), which dramatizes the incident.
Played a character called 'Eddie Furlong' in All Saints early in his career. He later played the character John Connor in the Terminator films, as did actor Edward Furlong.
Born on exactly the same date as filmmaker F. Gary Gray.
Born on the 14th anniversary of the opening of Disneyland Park in California.