WATCH: Hollywood remembers Luke Perry after his death.
Speaking to Esquire, Brad reflected on how starstruck he was when he walked onto the set of Once Upon a Time in Hollywood and found himself in the presence of Luke.
Talking of the Beverly Hills 90210 star, Brad, 55, says he practically yelled: "That's Luke f**king Perry!"
"We were like kids in the candy shop because I remember going to the studios and [Beverly Hills, 90210] was going on and he was that icon of coolness for us as teenagers," he explained.
"It was this strange burst of excitement that I had, to be able to act with him."
"Man, he was so incredibly humble and amazing and absolutely committed. He couldn't have been a more friendly, wonderful guy to spend time with. I got to sit down and have some wonderful conversations with him," he told the publication.