www.joesightings.com/SightingsIndex.html I don't know how many Canadians have posted on that site but it's good for finding out what areas have gotten them.
Target should be completing their action figure aisle resets by the 5th. I have read post on other boards that they are being found at Target now, along with TRU, KB Toys, and K-Mart of all places. Haven't read that Wal-Mart is stocking them as of yet. Be persistent, you'll find them.
I just picked up everything at Target. Seems this particular one jumped the gun on their reset...which is of course, exactly why I went.