The official American poster for Pillow Talk shows Rock Hudson and Doris Day locked in a passionate embrace. Pillow Talk was the first film to star Doris Day, Rock Hudson and Tony Randall all together. It was followed by Lover Come Back and Send Me No Flowers.

Rock Hudson turned down the rom com three times before he accepted, believing the script (which sees a man attempt to woo a woman he despises in real life by disguising his voice over a shared telephone line) to be "too risqué".

Doris Day, meanwhile, was always set on playing the part of interior decorator, Jan Morrow.

The tagline for Pillow Talk is the provocative sell, "It's what goes on when the lights go off!"

It's hard to believe it now, but at the time this film was produced, its writer, Ross Hunter, found that no theatre managers wanted to book it. Popular film themes in the late fifties were westerns, war films and huge spectacles - Pillow Talk was none of these.

The theatre managers that refused to book the film insisted that Rock Hudson and Doris Day were yesterday's stars. However, they were proven wrong when the film went onto be the second highest grossing movie of the 1950s.

The comedy brought in a staggering domestic box-office gross of $18,750,000 upon release.

Doris Day was nominated for best actress at the 1960s Oscars for Pillow Talk. She did not win and it remains her only nomination for the award.

The film did, however, scoop the Academy Award for best writing (original screenplay) at the 1960s ceremony.

Spanish TV first screened Pillow Talk on 20 July 1969 while everybody was watching the Apollo land on the Moon. Suddenly, the film stopped and Spanish people could see the landing directly. The film was not re-shown on TV until 1999, when Spanish viewers could, at last, see the conclusion.

The film's director, Michael Gordon, had hoped to make a sequel to Pillow Talk in 1980. It was to star Kristy McNichol as Jan and Brad Allen's daughter and Gregory Harrison as her boyfriend. Unfortunately, Gordon was unable to lure Doris Day out of retirement to make the film.

In 2009, Pillow Talk was named to the US National Film Registry by the Library of Congress for being “culturally, historically or aesthetically” significant.

The 2003 film Down with Love parodies elements of Pillow Talk, with both movies exploring feminist themes of the late 50s/early 60s.

Doris Day sings three songs in the film: Pillow Talk during the opening credits, Roly Poly in the piano bar with Rock Hudson, and Possess Me on the drive up to Jonathan's (Tony Randall's) cabin.

The movie is shot in New York and according to the NY Times, conveys a "splendid montage" of the city.

It remains Rock Hudson and Doris Day's most successful collaboration.