Pleasantville (1998)

Nothing is as simple as black and white.

Geeky teenager David and his popular twin sister, Jennifer, get sucked into the black-and-white world of a 1950s TV sitcom called "Pleasantville," and find a world where everything is peachy keen all the time. But when Jennifer's modern attitude disrupts Pleasantville's peaceful but boring routine, she literally brings color into its life.