Okay ... it took me a while to find as it's a single line item showing on my May statement dated May 2nd, 2013.
Using what was delivered as CAD to my account, for 100 shares of POT I received $27.79 CAD. Unless my math is wrong, using mrPPincer's BoC closing rate, that works out to 1.8% or so.
Now to see if any other from Scotia, RBC etc. post their results are well.
Clearly 0% at Questrade is going to be a front runner, if not outright winner. (Though like m3s, I'm really surprised that they wouldn't take at least something.)