James Mathison grew up in Sydney, Australia.
James won a competition in 2000 to become a new VJ on cable television's Channel V. Around the same time, he also appeared in an Australian reality show which revolved around Australian backpackers surviving in London with limited money. James was selected, along with fellow Channel V celebrity Andrew G to host Australian Idol.
James is mostly famous for one thing - stuffing up the most important line he had to utter during the series. "And the winner… of Australian I-den… 2004… Guy Sebastian!" This is why all television clips of Guy's victory are edited to simply say "And the winner… Guy Sebastian!"