Update: Google has since shared a list of retailers from which Canadians can pick up the Chromecast and take advantage of the offer. The options include Amazon, Best Buy, Future Shop, and Google Play.
Canadians, don't say Google's never done anything for you. The Big G is now tossing in $20 CAD worth of Play Store credit with the purchase of a Chromecast. This deal applies whether you pick one of the affordable media sticks up from Google Play or opt to hit up another authorized retailer such as Amazon instead.