The one that relly sticks out in my memory is not scary, but just a sublime moment.
Out there, 3 am or something. I hear some noises to the left, and the biggest darned hare bounds into view. Turns around as he goes past, looks back over at me for a few seconds, then bounds off. And this is in the middle of suburbia.
I did one night here VERY odd noises in the treeline some 80 metres away. Shone the torch there, and got eyes reflecting back - not near ground level either - definitely human height. Someone was wandering around in the treeline, maybe watching houses etc, or maybe just having a midnight leek during a walk