Eternal Sunshine of the Spotless Mind is a 2004 American romantic science fiction film about an estranged couple who have each other erased from their memories, scripted by Charlie Kaufman and directed by the French director, Michel Gondry. The film uses elements of science fiction, psychological thriller, and nonlinear narration to explore the nature of memory and romantic love. Kaufman and Gondry worked on the story with Pierre Bismuth, a French performance artist. The film stars an ensemble cast that includes Jim Carrey, Kate Winslet, Kirsten Dunst, Mark Ruffalo, Tom Wilkinson, Elijah Wood, Jane Adams, and David Cross.

Jim Carrey stars as Joel Barish, a man who is informed that his ex-girlfriend Clementine (Kate Winslet) has had her memories of their relationship erased from her brain via an experimental procedure performed by Dr. Mierzwiak (Tom Wilkinson). Not to be outdone, Joel decides to have the same procedure done to him. As Mierzwiak's bumbling underlings Stan (Mark Ruffalo) and Patrick (Elijah Wood) perform the operation on Joel -- over the course of an evening, in his apartment -- Joel struggles in his own mind to save the memories of Clementine from being deleted.

It opened in North America on March 19, 2004, and grossed over US$70 million worldwide.

Eternal Sunshine of the Spotless Mind was met with overwhelming acclaim, earning a Rotten Tomatoes approval rating of 93%, and Winslet's performance was generally praised. Roger Ebert commented, "Despite jumping through the deliberately disorienting hoops of its story, Eternal Sunshine has an emotional center, and that's what makes it work." Ebert later included the film in his "Great Movies" series.

The film was a critical and commercial success, winning the Academy Award for Best Original Screenplay, and has garnered a cult following. Winslet received an Academy Award nomination for Best Actress.