Thread: Have Aliens made contact?

I'm assuming most logically minded people think there probably are extra-terrestrials some where so my question is have they passed by, contacted or influenced Earth?

By the way, aliens does not have to mean people from other planets (or at least from our current perception of other planets in astronomy) they can be any sort of beings you like, even human beings, as long as you believe they are not from what we commonly conceive to be Earth. Whatever you think they are, or for whatever reason you think they're here, please explain.

(I will also be making a thread about Angels and Demons, but later)

EDIT

Also this is a video of an astronaut talking about alien contact.