Flashback

Examples: The Butterfly Effect, Harry Potter, Teen Wolf, The Notebook , Godfather II, Holes , Dear John , ITs a Wonderful Life, Toy Story 2 - Jessie's flashback to when she was loved, Citizen Kane, Ratouille, Safe Haven

More Examples: Inception, The Dark Knight Rises, I Am Legend, The Bourne Trilogy, Transformers, Cars, Forrest Gump , Titanic, Saving Private Ryan , Life of Pi