The guy, whose name has been cited as Craig Castaldo, has made cameos in a lengthy list of TV shows and films including: 30 Rock, The Departed, The Bourne Trilogy, Miss Congeniality, Shutter Island, Just My Luck, Romance & Cigarettes, Elf, Two Weeks Notice, Glitter, Keeping the Faith, Godzilla, Ransom, Big Daddy, Mr. Deeds, It's Always Sunny in Philadelphia, The Secret Life of Walter Mitty and The Other Woman.
According to reports, he used to be homeless which is where his title came from 0 but he also can be seen in many of his appearances with a radio strapped around his neck, hence the nickname 'Radioman'.
He's even made an impression on the likes of Tom Hanks, George Clooney, Robin Williams and Whoopi Goldberg, who took to him so much that she invited him to the Oscars with her when she was hosting.
Speaking about Radioman, Hanks said: "This man's a cultural institution. You get on a first-name basis with Radio, you know you've made it," while George Clooney added: "No one shoots in New York and doesn't know who Radioman is."
Robin Williams referred to him as a 'one of the fixtures of New York'.
Speaking back in 2012, the bearded New Yorker said: "I'm just me, Radioman. I don't like to be pigeonholed into being called a movie star. People look at a guy like me and they think, 'Oh yeah, a bum.'"
Back when Radioman was homeless on the streets of New York, he would heckle movie stars. He told The Star: "I was drinking at the time. I said, 'Bruce Willis! I think your movie looks like a cartoon!'"
It seems to have helped him out.
Real Stories has shared a documentary about Radioman, who was dubbed a 'good luck charm' by Meryl Streep.
In it, he says: "Radioman? I guess it's a character, yeah, in a way.
"But I am the real one, I am the real Radioman - not really a character at all.
"I am what I am, it was on the film sets where I became Radioman.
"I always wanted to be part of... somewhere, to be an actor, to be in the movies. In any capacity.
"I just love it. I just like the atmosphere, I like the people. I like what happens in the movie business. Plus you get free food..."
You can watch the full documentary here.