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Sam's mother's name is Rose Tyler.
Rose Tyler had earlier been used as a name of a Doctor Who character.
As revealed by Life On Mars co-creator Matthew Graham his daughter named Sam Tyler after the Doctor Who character
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Annie: I'm telling you Sam, you find their killers, you save Mama Rose.
Called Mama Rose, Rose Hovick was the mother of the burlesque stripper, Gypsy Rose Lee, who was hugely popular in the thirties.
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Elliott Casso: (greeting Gene Hunt) Gene Hunt! The Jean Genie, lives on his back.
"The Jean Genie" is a song by David Bowie that was released in November 1972. One of Bowie's most famous songs, it was the lead single for the album Aladdin Sane (1973). The song was featured in Episode 1.4 of the UK version of Life on Mars upon which this episode is based.
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Sam: (speaking to Jim Croce) Whatever you do, Jim, you stay away from small airplanes, all right?
Jim Croce died in 1973 in a small plane crash.
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Sam: (after Rose asks his name) Sky... walker. Luke Skywalker.
This is a reference to the character from Star Wars.