His first documentary feature, That Sugar Film, was selected for Berlin Film Festival and IDFA and took out many awards around the world including Best Doc at the Australian Academy Awards. It is still the highest grossing Australian Documentary of all time across Australia and New Zealand.
Gameau graduated from Australia's National Institute of Dramatic Art (NIDA) with a degree in Performing Arts (Acting) in 1999.
He appeared in the 2009 feature film Balibo, in which he plays the part of Seven Network reporter Greg Shackleton. He starred as Scotsman Andy Maher in the Australian TV miniseries Underbelly: A Tale of Two Cities.
In 2013, he appeared in an episode of Wentworth as Mark Pearson.
In 2014, he announced the production of the documentary That Sugar Film in which he relates the dire mood swings and weight gain he experienced after taking on the low-fat, high-sugar health food diet for 60 days. Gameau wrote a companion book for the film, That Sugar Book, which reached the top of the Health & Well-being best-seller lists in Australia.
