Hi all,
Because not all users are all the discussion group of Canada, i felt it necessary to post this up here.

http://wiki.openstreetmap.org/wiki/GeoBase_Import
(copied from the page)
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Agreement Announcement (18 November 2008)

Announcement
The October OpenStreetMap Foundation meeting was held Tuesday 28 October 2008. The encouragement of GeoBase and their enthusiasm for OpenStreetMap led to their legal analysis of the licenses and a finding of compatibility. It was proposed that the GeoBase data be included in OSM based on the license compatibility and the aligned GeoBase and OpenStreetMap goals of providing free geospatial data to as wide an audience as possible. The proposal was passed by the board.
The OpenStreetMap community, the OSM Foundation and particularly Canadian contributors to the OpenStreetMap community have anticipated this announcement for some time. I'm sure that you will all join me in thanking GeoBase, the Foundation and the Canadian points of contact for their patience, persistence and vision.

Scope
The importance of this announcement is hard to over-state. The agreement between GeoBase and OpenStreetMap marks the contribution of government data from the second largest country on the planet, the largest country in the western hemisphere and the country with the longest coastline on the planet. The GeoBase data set is rich and diverse including the National Road Network, National Hydro Network (surface water), Geopolitical Boundaries, Elevation data and Satellite imagery. The scope of this contribution is unlikely to be surpassed in geographic area.

Next steps
Those of you with an interest in participating in the GeoBase import discussion and project should join the other volunteers on talk-ca, the mailing list for OpenStreetMap discussions relating to Canada. Like previous data import projects for the USA and the Netherlands, this project is community-run. Also like previous import projects the documentation of the conversion and import process should be recorded in the OSM Wiki, on the GeoBase Import page.
The Foundation expects that the OSM community will begin by examining the GeoBase data and importing it in test areas of OpenStreetMap, where little risk is posed to contributed data if the conversion and import is flawed. As the community gains experience with the conversion and import process larger areas will be imported.
The Foundation expects that, as with previous import projects, converting and importing data in areas where it will be merged with existing OSM contributions will be tested first in areas where contributions are sparse, then in areas of more complex data. GeoBase has generously offered their assistance with understanding, converting and importing the GeoBase data.
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On the talk-ca discussion we are figuring this all out, and as the news indicates, its VERY important that this gets well documented on the Wiki page.
I have posted some notes the discussion. Please feel free to post comments on the page, as all comments are useful and helpful.

For the US Tiger Data, it looks like its a challenge. Hopefully we can get a solution, which would build on the template for any other data out there which is on the sidelines.
http://wiki.openstreetmap.org/wiki/TIGER

Cheers,
Sam Vekemans
Across Canada Trails