And - there have been recent discussions on the internet about whether aliens would be friendly or just come to enslave and/or eat us all. (I bet we taste like chicken.)
Of course, there have been numerous books & films made on both sides of the fence... some of my favs are:
The Brother from Another Planet
And, my personal favorite,
Men in Black
I have to admit, I did not personally spot any UFOs in my star-gazing this past August. But, what about you? Ever seen a UFO? Or ever wanted to see one?