Eternal Sunshine of the Spotless Mind

• Movie Goof (continuity error): During the "operation", Mary passes a joint to Stan. In the next shot, Mary has the joint again.
• In the scene where Clementine returns to Joel's house drunk, Joel's answering machine can be seen in the background. It is a Panasonic Easa-Phone.
• All of the train shots were shot onboard a real, moving, train.
• Reporters tried to interview Jim Carrey as the unplanned scene with Joel and Clementine at the street parade was being filmed. If you listen closely, you can hear somebody shout "Speak to me!" at Jim Carrey.