There are various reasons why a movie is eagerly looked forward to. From the casting news to the concept of the movie, every piece of the information intrigues us. Then come the trailers, which sometimes to our disappointment reveal the whole plot of the movie instead of offering just a glimpse. But there are few movies that hide secrets until the first watch. Yes, there are the twists and turns, which keep us glued to the screen but there are also cameos by popular actors which have us gasp in surprise spiking our interest in the movie. These cameos have to be kept well under wraps with extreme care for the desired effect. Think about the collective "ooohs" in the movie hall when out of the blue appears your favorite actor who you were absolutely not expecting to see in the film. We have a list of movies that have succeeded in doing just that.
Johnny Depp in 21 Jump Street
This movie based on the series of the same name had Johnny Depp reprising his role from the series for a blink-and-miss appearance. There is a lot to be said about nostalgic feels.
Tom Cruise in Tropic Thunder
He didn't just keep his appearance in the movie under wraps but he also kept himself under a heavy disguise, which made him almost unrecognizable and it was a welcome surprise.
Which cameos took you completely by surprise? Tell us in the comments below and don't forget to share.