Lost In Translation
Lost In Translation is a much loved film that tells the story of Bob, an aging movie star, played by Bill Murray, who befriends Charlotte, a young college grad, played by Scarlet Johansson, and the story of their unlikely friendship. In the final scene, Bob unexpectedly kisses Charlotte on the lips and says something inaudible to the audience.
Bob and Charlotte
The reason why Scarlet Johansson looked so surprised in this scene was because it was actually not scripted, so her surprise was actually genuine. Murray felt that he could add in the unplanned moment, and director Sofia Coppola ended up liking the effect and left it in the final cut.