Apollo 11 Astronaut Edgar Mitchell, founder of the Institute of Noetic Sciences (our first client), discloses knowledge of alien contacts that have taken place over the last 60 years on the Kerrang Radio program. Mitchell said "It's starting to open up quite a bit. There's more nonsense out there about this than there is real knowledge, but it is a real phenomena. This is really starting to open up. I think we're headed for real disclosure and some serious organizations are moving in that direction."

Mitchell's disclosure follows up Apollo 11 astronaut Buzz Aldrin recount of his Apollo 11 UFO Encounter. Here's the BBC story that aired last year:
Buzz Aldrin Talks About UFO Spotted On The Apollo 11 Mission - The most popular videos are here

To learn more about the subject, the best resource that I've found in the US is the Disclosure Project, They have "over 400 government, military, and intelligence community witnesses testifying to their direct, personal, first hand experience with UFOs, ETs, ET technology":

The head of the disclosure project is attempting to get our government to open up the files in an attempt to release knowledge that may help with clean energy solutions. Now that would be a fantasy come true!

Not suprisingly, NASA is still playing the comments down.