1) In the movies, spies are always super sexy people that you can't help but stare at. In real life I think this would be very detrimental to their job description.
2) Hunters use duck calls, deer calls, coyotes calls... all kinds of things to make us sound like another species and draw them in. How effed up would it be if there was an animal species that came up with a human call? "Hey Joe, the deer went the other way."
3) I'm constantly amazed at my dog's ability to vomit in a straight line.