Johnny Depp talks Keith Richards, "21 Jump Street" and possible 5th "Pirates" film

(CBS/AP) LOS ANGELES - "Pirates of the Caribbean: On Stranger Tides" doesn't hit theaters until May 20, but Johnny Depp and producer Jerry Bruckheimer are already thinking about a fifth "Pirates" film.

So, what would it take for the 47-year-old actor to transform himself into the swashbuckling Capt. Jack Sparrow yet again?

Pictures: Johnny Depp
Pictures: The "On Stranger Tides" premiere

"Essentially the same ingredients that have gone into each and every one, especially this one," he tells the Associated Press. "I would be in if it was right, for sure."

Bruckheimer is already working on the next "Pirates" script. But Depp also has other projects on his plate, including a cameo in the big-screen adaptation of "21 Jump Street," the 1980s TV hit that made him a star.

He'd heard rumors about the film before being approached for the role, "then it finally came up and the dates were right and it was a gas," he says. "It was a real great experience and I was happy to do it."

Depp also stars in "The Rum Diary," which is set for an October release, and he'll soon get to work on "The Lone Ranger" with three-time "Pirates" director Gore Verbinski.

First, though, is the latest "Pirates" installment, which reunites Depp with one of his heroes, Rolling Stones guitarist Keith Richards.

"To be able to bring him back into the 'Pirates' fold, where he most certainly belongs, was a gas," Depp says. "Just spending a couple days sharing a trailer, it was as close, I suppose, as being in a rock 'n' roll band with him as you can get."

He's also working with another rock star friend. At the "On Stranger Tides" premiere, Depp told Extra that he and Aerosmith frontman/"American Idol" judge Steven Tyler have been collaborating musically, and he would be interested in playing Tyler if a movie is ever made about him.

"I'd give it a shot," he said. "Why not?"