Torchwood: Miracle Day/Trivia
- Actor Allusion: Matheson is gleeful at the beginning over someone named "Reynolds" retiring due to his wife's sickness. Mekhi Phifer played Ben Reynolds in Lie to Me.
- Executive Meddling: Bill Pullman mentioned in an interview that Oswald Danes ended up dying because the lawyers said so. Not that we can blame them, but still.
- Fan Nickname: "The Triangle", because of the revolving triangle that appears on the cellphones of their lackeys. Those who have read the brief Starz synopses for later episodes knew they were called the Three Families, however.
- Hey, It's That Guy!:
- Wayne Knight from Jurassic Park and Seinfeld.
- NEWMAN!
- Dichen Lachman from Neighbours and Dollhouse.
- Mekhi Phifer of Lie to Me and ER.
- Bill Pullman from Independence Day. Oh, and Spaceballs.
- Ethan Rayne is one of the talking heads on TV while Matheson is flipping through the channels.
- Lauren Ambrose from Six Feet Under.
- George Foyet from Criminal Minds is being creepy with knives again.
- Which has been a running Playing Against Type for C. Thomas Howell, aka Ponyboy.
- Frederick Koehler (Lists) from Death Race plays Ralph.
- Ecklie plays Colin Maloney.
- Winston Zeddemore is Stuart Owens.
- Madame X (aka Colonel Kira/The Intendent) is Angelo Colasanto's granddaughter.
- Q is CIA Director Shapiro.
- Wayne Knight from Jurassic Park and Seinfeld.
- Recycled Set: Scenes filmed at Ontario International Airport are set in airports in Los Angeles, Shanghai and Buenos Aires.