Apparently the three are very fond of one another, as revealed at the HBO premiere of David Mamet's movie "Phil Spector" this week. According to the New York Post, Pacino (who plays the titular role in "Spector") met up with Richards for the first time and the two icons had a friendly exchange.

"We have a mutual friend," Richards was overheard telling Pacino. "Johnny Depp!" Pacino replied, "I love Johnny!"

And somewhere in the world, an angel got a high five.

Pacino and Depp were co-stars in the 1997 movie "Donnie Brasco" and Richards wrote and performed the song "Only Found Out Yesterday" on Depp's blockbuster hit "Pirates of the Caribbean: At World's End" in 2007.

Also, Depp's next talked-about project, the thriller "Black Mass," will be directed by Barry Levinson -- who was the producer on Pacino's "Phil Spector." In the film, Depp is set to play the part of infamous gangster Whitey Bulger.