Michael Sheen told a podcast his hometown of Port Talbot is the British 'Area 51' - after spotting UFOs flying there.
The famous actor, 50, grew up there before finding fame in hit films like The Damned United, The Queen and Frost/Nixon. He suggested Port Talbot could actually be a hotspot for extra-terrestrial life, calling it the "Little Chef of the galaxy".
Speaking on Richard Herring's Leicester Square Theatre podcast, he said: "I think Port Talbot, where I come from, is on some weird alien map. It's like some sort of lay-by. The lady who lived next door - who was a very respectable lady and wouldn't make up stories - told us that one morning she was in the kitchen which overlooked the back garden.
"She said she was standing there making a coffee and a flying saucer came down and hovered over her back garden and then went. Of course, you think that's nonsense but she was a very serious lady."
Sheen continued by saying both he and his dad had had similar close encounters.
He said: "One day I was coming home from school. I got off the school bus and I was walking up my street. I was just about to turn up the path to my house and coming round the mountain was a formation of lights. I stood there looking at it thinking 'this is going to be some sort of weird reflection'.
"There was a formation of some things coming round and going out across the sea then disappearing. And then years later on New Year's Eve - not that long ago, about five years ago - my dad, who had not had a drink that night, went up to bed.
"He said he saw a light in the sky. My dad is a character but is not someone who would make this up. He said he saw a thing in the sky with lights going around it - it was there for ages then it shot off. I think Port Talbot is some kind of hub."
Host Richard Herring then quipped: "People in Port Talbot maybe haven't seen a helicopter before - could it be that?
To which Sheen humorously replied: "That is entirely possible."
