Some prints of the original 1939 British film version still exist, despite MGM's attempt in 1944 to destroy all existing copies to avoid competition and comparison. This version still turns up occasionally on Turner Classic Movies.

Gaslight was referenced in the TV movie A Slight Case of Murder (1999), in which William H. Macy plays a film critic who tries to cover up the accidental death of his lover.

"Gaslighting" has entered into the language as a term for deliberately trying to drive someone to insanity by manipulating their environment, the way Boyer does to Bergman.

A similar plot device was used in the movie Hush...Hush, Sweet Charlotte (1964), in which Olivia de Havilland and Joseph Cotten (one of the original cast members of Gaslight) attempt to drive Bette Davis mad in order to take possession of her home and money.

FAMOUS QUOTES from GASLIGHT (1944)

Paula (Ingrid Bergman): Suddenly, I'm beginning not to trust my memory at all.

Gregory (Charles Boyer): Jewels are wonderful things. They have a life of their own.

Miss Thwaites (Dame May Whitty): It's an odd household, too. That maidservant ­ most impertinent. I can't get a thing out of her. She won't talk to me, though she would quick enough if I wore trousers. The way she carries on with that policeman on the beat. Scandalous!

Paula: Gregory, are you trying to tell me I'm insane?
Gregory: It's what I'm trying NOT to tell myself.

Paula: If I were not mad, I could have helped you. Whatever you had done, I could have pitied and protected you. But because I am mad, I hate you. Because I am mad, I have betrayed you. And because I'm mad, I'm rejoicing in my heart, without a shred of pity, without a shred of regret, watching you go with glory in my heart!

Compiled by Rob Nixon