Actor Leonardo DiCaprio has nominated Prime Minister Stephen Harper to do the ice bucket challenge.
DiCaprio was in northern Alberta last week visiting the oilsands to do research for an environmental documentary.
The Oscar-nominated star of "The Wolf of Wall Street'' posted a video on his Facebook page of him doing the ice bucket challenge with two First Nations chiefs.
Afterward, he called out Harper to do the same.
No one in the Prime Minister's office could reached for comment.
Thousands of people have posted videos of themselves getting buckets of ice water dumped over their heads and challenging others to do the same, or donate money, to the ALS Association, which raises money for Lou Gehrig's disease research and assistance.
"Hello from Lake Athabasca, we're here learning about the Canadian tar sands. We took a moment to join the #IceBucketChallenge movement in support of the ALS Association. My friends Chief Adam of the Athabasca Chipewyan First Nation challenges Dave Collyer, president of Canadian Association of Petroleum Producers, Chief Courtoreille of the Mikisew Cree First Nation challenges Mark Little of Suncor Canada and The Sierra Club President Michael Brune challenges Shell CEO Ben van Beurden," says the post on DiCaprio's site.
"And me? In addition to a donation from my foundation, I challenge Canadian Prime Minister Stephen Harper."
DiCaprio has a long history of involvement with the environment.
He sits on the boards of several international conservation organizations and started an environmental charity foundation in 1998.
The controversial oilsands development near Fort McMurray has seen a string of high-profile visitors in recent years.
They include human rights leader Archbishop Desmond Tutu, musician Neil Young and Oscar-winning film director James Cameron.
Since the ALS Association began tracking the campaign's progress on July 29, it has raised more than $53.3 million from 1.1 million new donors in what is one of the most viral philanthropic social media campaigns in history.