By now we're all quite familiar with Johnny Depp's inspiration for his Oscar-nominated turn as Jack Sparrow in the first Pirates of the Caribbean film - Rolling Stone's legendary guitarist, Keith Richards.

Richards donned pirate attire and a funny hat to boot for his cameo appearance as Sparrow's father, Captain Teague, in the third Pirates movie and will reprise the role for the upcoming Pirates of the Caribbean: On Stranger Tides.

On Stranger Tides picks up after the events of Pirates of the Caribbean: At World's End and finds Sparrow on a quest to locate the Fountain of Youth. Geoffrey Rush will reprise his role as Captain Barbossa, while franchise newcomers Penelope Cruz and Ian McShane will play, respectively, a woman from Sparrow's past and the villainous pirate Blackbeard.

Captain Teague was introduced as the keeper of the pirate code in Pirates of the Caribbean 3 and only appeared onscreen for (maybe) three minutes or so. There's no word yet as to whether or not Richards will have a larger role in Pirates of the Caribbean 4 or if moviegoers will actually be able to understand what he's saying this time around (we kid - sort of).

At World's End suffered from being overblown in nearly every way imaginable and On Stranger Tides should have a shorter running time and feature fewer extraneous characters and plot threads. It is a Pirates of the Caribbean movie, so there'll still be plenty of visual FX, explosive set pieces, elaborate costumes, and Depp drunkenly cracking one-liners.

So what villainous supernatural creatures will appear in Pirates of the Caribbean 4? We've already had undead pirates, fish people, and a sea captain with a beard made of squid tentacles - is there anything the fourth movie can throw at moviegoers that will seem that much weirder in comparison?

Pirates of the Caribbean: On Stranger Tides arrives in 2D, 3D, and IMAX 3D theaters in the U.S. on May 20th, 2011.

Source: Reuters