In Episode 1, Daniel makes a call from a phone booth where someone has written "Reality Sucks" on the glass, and someone else has crossed out "Sucks" and written "or Nothing" below it. In the followup miniseries ("Cold Lazarus"), "Reality or Nothing" is the name of a group of anti-media terrorists.
In the Dennis Potter interview "Seeing the Blossom", Dennis Potter comments that he wrote "Karaoke" and its sequel "Cold Lazarus" based on the simple writer's premise: "If you wanted to make the world a better place, who would you kill?"
CAMEO(Ewan McGregor): The passer-by whom Daniel Feeld overhears quoting lines from his script is an un-credited McGregor who had appeared in another Dennis Potter play, Lipstick on Your Collar (UK), 5 years earlier.
Dennis Potter wrote a role for Louise Germaine, but she was unable to take it, as she was pregnant at the time.
Dennis Potter originally wrote the role of Sandra Sollars was for actress Louise Germaine. According to the May 5, 1996 issue of OK! magazine, "Pregnancy cost her the part". Producers claimed her condition would cost them £10,000 a day for every day she took off sick.
The address shown for Sandra (34 Rednall Terrace, Hammersmith, W6) is the same road that Dennis Potter grew up in.
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