My wife likes to do that to me.While I don't see them much, I hear these guys a lot at my suburban house. There was one a few years ago that had a unique and seriously startling call that sounded like three short human screams followed by maniacal laughter. And I swear it got a kick out of silently getting as close as possible when I was outside at night (night owl myself), then letting that cackle rip. I'm sure my responding jump and yelp was amusing!
Scares the crap out of me.