I just discovered this online today. The Canadian Air Pilot are approach plates from Nav Canada for all airports in Canada with IFR approaches.
The country is divided up into 6 sections, each section has their own plate booklet (two for Quebec, one in English and the other in French). You can find PDF copies of the latest versions in the Nav Canada AIP section.
UPDATE: Since the files have been removed from Nav Canada’s website, I have included a copy of them on my server. Please don’t use these for navigation as they are expired.