1) The Simpsons Movie
OK, so technically they didn’t “reshoot” anything here, but nonetheless major alterations were made to The Simpsons Movie just prior to its release. Director David Silverman and his writing team kept whittling away at the film with just two months to go, eventually cutting hours of completed material (including cameos by stars such as Kelsey Grammer and Edward Norton).
“Reshoots” also saw whole new characters – like bad guy Russ Cargill and Lisa’s love interest Colin – completely overhauled, while Homer was made to appear much more sympathetic after some bad previews, and the film effectively changed from a musical to a straight feature-length episode, with numerous musical sequences swapped out. Its lasting gag, the Spider-Pig scene, was also added in at the last minute.