Same with me.... the day I gave a lecture on how to identify counterfeit notes, was the day a driver took the $100! (we also have the UV light).
I saw a youtube video a while ago. I can't access Youtube right now for some reason, otherwise I would try to find a link for the video. But anyways this guy in Toronoto was ranting about the fake twonies he was getting in his change. He did a side by side comparisson and they are kind of like ikandiggit's loonies, in that they are easy to spot. they aren't as heavy, super weak strike, the letters are crooked they are reeded all the way around i think. They are out here in ontario and people do get fooled, I guess you just have to be vigilant.