Michael Keaton's 'Birdman' won the Producers Guild of America award for Outstanding Producer of a Motion Picture.
The movie starring Keaton, Ed Norton and Emma Stone beat off competition from nine other films, including 'Boyhood' and 'The Grand Budapest Hotel', to claim the coveted award, which is seen as a strong indicator to the destination of Oscar awards.
Alejandro G. Iñárritu, who directed the movie, said: "On behalf of all of us, our only ambition was to make a risky and experimental exploration of the cinematic language, of an artist's complexity played by the incredible Michael Keaton.
"I feel humbled by this. All the films that are nominated have such an individual voice, the expression behind them, only the people who made them, could have made them."
The success of 'Birdman' is considered meaningful in regards to the Oscars, as the Producers Guild of America's 6,700 members are also Oscar voters.
In fact, the winner of the top Producers Guild of America award has gone on to win Best Picture at the Oscars every year since 2007.
Meanwhile, 'The Lego Movie' was named Best Animated Feature, even though it has not been nominated in that category at the Academy Awards.
A list of Producers Guild of America winners:
Outstanding Producer of Theatrical Motion Pictures:
Outstanding Producer of Animated Theatrical Motion Pictures:
'The LEGO Movie'
Outstanding Producer of Long-Form Television:
Outstanding Producer of Documentary Theatrical Motion Pictures:
Outstanding Producer of Episodic Television, Drama:
Outstanding Producer of Episodic Television, Comedy:
'Orange Is The New Black'
Outstanding Producer of Non-Fiction Television:
'A SpaceTime Odyssey'
Outstanding Producer of Competition Television:
Outstanding Producer of Live Entertainment & Talk Television:
'The Tonight Show Starring Jimmy Fallon'
Outstanding Children's Programme:
Outstanding Digital Series:
'Comedians In Cars Getting Coffee'