alternatehistory.com

As voted by Canadian viewers, 2001.
(Blurbs adapted from Wikipedia)

5. Roméo Dallaire, Montréal, (1946-Present) Humanitarian, author, retired Lt-General
Dallaire served as Force Commander of UNAMIR, the ill-fated UN peacekeeping force for Rwanda, from 1993-1994, and attempted to stop the genocide there. Served as a Canadian Senator where he was an advocate for veterans' welfare and mental health research; retired to focus on his humanitarian advocacy for child soldiers

4. Bob Marley, Jamaica (1945-1981)
singer, songwriter, musician
Pioneer of reggae music, increased visibility of West Indian music worldwide, becoming a global pop culture icon for over a decade. Became known as a Rastafari icon, infused music with his sense of spirituality. Global symbol of West Indian culture; advocate for legalization of marijuana

3. Nellie McClung, Toronto/Alberta (1873-1951)
author, activist, suffragette, politician
Part of the social and reform movement that was prevalent in western Canada at the turn of the century, through her hard work and advocacy, Alberta became the first province to give women the right to vote and to run for public office, in 1916.
She was a leader of the suffragist movement in Canada, and through her advocacy made important contributions to temperance, pacifism, enfranchisement of interned Canadians, acceptance of refugees, labour and power rights.

2. Norman Bethune, Toronto (1890-1959) and Tommy Douglas, Alberta (1904-1986)
Bethune was a thoracic surgeon who first rose to international prominence as a frontline surgeon in the Spanish Civil War and second Sino-Japanese War. He helped bring modern medicine to rural China, played an important role in the early establishment of diplomatic relations between Canada and the PRC, and his observations on the Soviet healthcare system made him an early advocate for socialized healthcare.
Douglas was a Baptist minister and Social Gospel preacher who early in life developed a proclivity toward socialized medicine. He was a founding member of the CCF, and served over 40 years as a parliamentarian in Alberta and Federally, including over fifteen years as Alberta premier, where, as the first democratic socialist government in North America, he helped introduce Bethune's socialized medicine program, who served as his Health Minister.
Shortly after Bethune's death, Douglas became the federal leader of the rebrand Labour Party, and as opposition leader was instrumental in the Canada's adoption of the NHS, largely seen as a culmination of Dr Bethune's work.

1. Pierre Trudeau, Montréal (1919-2000) & Lincoln Alexander, Huron (1922-Present)
The most effective bi-partisan political team in Canadian history, their sometimes tense relationship contributed to national unity as they both endeavoured to break down old barriers and introduce the official policy of multiculturalism we have today.
Alexander worked as a lawyer in London and Toronto before entering politics; he would serve as Premier of Huron and Federal Minister of Labour before becoming PC leader in 1967.
Trudeau was a Constitutional Law professor when hired to chair the Royal Commission on Biculturalism. When it published its findings, in 1969, to now PM Alexander, he adapted and expanded the recommendations to include an official languages policy and color-blind immigration.
After defeating Alexander in the 1976 election, Trudeau worked to repatriate the constitution and enshrine the policy of multiculturalism.
Alexander would later, as Governor-General, appoint Trudeau to the Senate (upon recommendation of PM Paul Martin).