Famous broadcaster Walter Cronkite had his own experience witnessing a UFO.  He shared it with only a few people including the author of this story, Bill Knell.      

The Berkshire UFO, witnessed by many in 1969. 

Jackie Gleason, friend of former US President Richard Nixon, shares an upsetting story to his wife regarding an excursion the two took together where Gleason witnessed things not of this world.

Russell Crowe and John Lennon UFO sightings.

Johnny Cash, Keith Moon and Sylvia Plath paranormal stories.

References:

Walter Cronkite’s UFO Encounter, Written By: Bill Knell, ufocasebook.com Posted: 8/4/2003

10 Bizarre Paranormal Stories Involving Famous People, June 21, 2016, by Gordon Gora, fact checked by Jamie Frater

Inside The 1969 Berkshire UFO Incident That Shook A Small Massachusetts Town by Natasha Ishak