Johnny Depp will always be tickled remembering his time working with Al Pacino on Donnie Brasco - because the Hollywood great told him the same joke over and over again.
The actors filmed the mob thriller together in 1997 and the Pirates of the Caribbean star admits Pacino's sense of humour made it one of the most memorable shoots of his career - even though it took Depp a while to figure out the gag's punchline.
Depp says, "Al's fantastic, he's a legend. All I knew about Al prior to shooting was that he was certifiably insane.
"He's a joker but he'd like to tell me this one specific joke over and over. And I really didn't understand it, I didn't get the joke! He thought it was my problem. He inflicted it upon me and I could feel my IQ points drop.
"I finally figured it out. He'd lean over and he'd go, 'John. Skeleton goes into a bar. Orders a beer and a mop.' On a loop. He would howl every time he told the joke."