I have not had a chance to see it yet, nor do I know if it is even available in Canada, but it seems that you can download a full episode of Battlestar Galactica on the Xbox Live Marketplace.
From Major Nelson:
Xbox Live users in the U.S. can now download the full length TV show ‘Battlestar Galactica: The Story So Far’ in standard def from the Xbox Live Marketplace. Just in case you are wondering, this marks one of the first times that a complete TV episode has been digitally delivered to your Xbox 360 over Xbox Live. The file size is 492.20 MB.