500 Days of Summer (stylized as (500) Days of Summer) is a 2009 American comedy-drama film written by Scott Neustadter and Michael H. Weber, directed by Marc Webb, produced by Mark Waters, and starring Joseph Gordon-Levitt and Zooey Deschanel. The film employs a nonlinear narrative structure, with the story based upon its male protagonist and his memories of a failed relationship.
As an independent production, the film was picked up for distribution by Fox Searchlight Pictures and premiered at the 2009 Sundance Film Festival. It garnered critical acclaim and became a successful "sleeper hit", earning over $60 million in worldwide returns, far exceeding its $7.5 million budget. Many critics lauded the film as one of the best from 2009 and drew comparisons to other acclaimed films such as Annie Hall and High Fidelity.