The Switch is a 2010 American romantic comedy film directed by Josh Gordon and Will Speck. Based on a screenplay written by Allan Loeb, the film, formerly titled The Baster, was inspired by the short story "Baster" by Jeffrey Eugenides. This was originally published in The New Yorker in 1996. The film stars Jennifer Aniston, Jason Bateman, and child actor Thomas Robinson. Patrick Wilson, Juliette Lewis, and Jeff Goldblum appear in key supporting roles.
Neurotic Wally Mars (Jason Bateman) has one bright spot in his life: his friendship with Kassie (Jennifer Aniston). When Kassie announces her intention to become pregnant using a sperm donor, Wally thinks he will be the lucky guy, but Kassie has someone else in mind. While drunk at Kassie's insemination party, Wally substitutes his sperm for the donor's, then passes out, remembering nothing. Seven years later, Wally meets Kassie's son, who seems oddly familiar to him.
After a romantic summer together, Noah is off to Harvard, and Elle heads back to high school for her senior year.
Stuck in a time loop, two wedding guests develop a budding romance while living the same day over and over again.
After spending a wild night together, Adri discovers the only way to see Carla again is to become a patient at the psychiatric center where she resides.