Yikes...that's the ultimate in creepy.
I guess all you can do is be careful, that is, if there's no action you can take. But I don't know...I would think that standing outside your door and allegedly listening in would be enough grounds to have something done. In the meantime...I don't know. Be civil, friendly (but not TOO friendly), and avoid the hell out of him.
Or just move to Calgary!
I've never experienced strange neighbours that I can remember. This guy sounds really bad though. Be careful!
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