Via internal mail I learned about the launch of the Government of Canada's Open Data pilot project.
There's also a link allowing you to directly browse their 'geospatial collection', which, if I'm still able to add numbers, offers a total of 166 geospatial datasets (unless some datasets are found in multiple categories?). The main page claims that there is 260,296 geospatial datasets already available. No matter what the actual numbers are, it's still a great day for open data in Canada.
From the data.gc.ca backgrounder page: "The GC Open Data Portal is a collaborative effort amongst Government of Canada departments and agencies to provide access to data managed by the government that can be leveraged by citizens, businesses, and communities for their own purposes. The government will work towards making public data that is not sensitive in nature (i.e. data which is NOT personal, secret, or confidential) broadly available in reusable formats."