Not a UFO in the typical sense, but I have seen a meteor (or maybe a piece of space trash) burn up right over my house.
My cousin and I were the only ones who saw it, since we were on the trampoline. I looked up and saw, for a few seconds, a long, orange streak in the sky. 'Twas pretty cool.
Isn't that what the Voyagers were sent up for? They may be unmanned, but they'd still be UFOs to life on planets other than earth.So I think it's safe to say that intelligent life forms didn't up and decide to start flying in a random direction for 2 million light years and suddenly discover us. It's just silly.