All the celebs are at it these days, turning up, uninvited to screening parties, to surprise their legion of fans. Nice to know they still know what counts; if it weren't for their fans, flocking to the star in question's movies in their droves, their careers would have already burnt out.

Johnny Depp is known for being a bit of a ledge, so it's no surprise to us that he surprised a bunch of fans at a special advance screening of 'The Lone Ranger' in Lawton, Oklahoma, on Friday night.

The 50-year-old actor stunned members of the American Indian tribal community, Comanche Nation, by showing up at the red carpet event at Carmike Cinemas with social activist LaDonna Harris, who is his adopted Comanche mother.

Speaking at the event, Johnny, who worked closely with the community to make his role as Tonto in the controversial film as authentic as possible, paid tribute to them, saying: 'I'm proud to show [this film] to the Comanche Nation and members of the Indian Nations first.

'It really does feel like home after being here last year. It's good to be back. The Comanche people really welcomed me into their nation.'

The actor signed hundreds of autographs and according to The Lawton Constitution, the movie's producer Jerry Bruckheimer and director Gore Verbinski were also at the screening.

Johnny's surprise appearance came just a week after Brad Pitt surprised fans at a screening of his movie 'World War Z' in Los Angeles.

The 49-year-old actor made similar surprise appearances at cinemas in Chicago, Philadelphia, Atlanta, Georgia, and also showed up at a theatre in Austin, Texas, earlier this month in a bid to generate hype for his movie.