Shirley Maclaine
Maclaine regularly speaks on UFOs and aliens life

One person who has been discussing the existence of extraterrestrial visitors and UFOs longer than most of the people on this list have been born is Shirley Maclaine, one of Hollywood's most dedicated UFO investigators and believer. Shirley says that UFO sightings are a regular occurrence at her New Mexico ranch, although she does admit to never coming in contact with an alien in person.

"I've seen a mothership here, and I've seen them at my ranch," she told Oprah during an interview at the beginning of the decade. "One famous day, a friend of mine was sitting in my hot tub out there, and three UFOs came over and hovered over the hot tub for about 10 minutes."

The firm believer went on to say that alien activity is so commonplace in New Mexico because the universe-wanderers are attracted to the strong presence of crystals in the area. She explained, "Crystals amplify the consciousness. They're attracted to that crystal amplification."