Forever Red - S1-E34
Trivia: This episode featured an appearance by every Red Ranger, with the exception of Steve Cardenas, who played Rocky in series 2, 3, and 4.
Winning a Battle, Losing the War - S1-E3
Trivia: Several times in this episode, jokes are made about the residents thinking George is gay. Isaiah Washington was later fired for making homophobic remarks about T.R. Knight.
Trivia: The theme tune heard for the show "Capital Beat" is actually the theme music for the UK's "News at Ten" on ITV.
Trivia: Danno was played by Tim O'Kelley in the 5-0 pilot. But a NY test audience told CBS they didn't buy him as a serious cop because he was too much of a "smart-cracking, Jimmy-Olsen-type gee-whiz kid." Leonard Freeman took the criticism to heart, and recast the part with James MacArthur for the series.
Trivia: The actress playing Jane, Susannah Harker, was quite heavily pregnant during the filming of the movie. This can be seen quite obviously in some scenes.
Trivia: This is the only episode in the entire series where the victim is attacked but is later revealed to be still alive.
Trivia: Linda Hamilton was pregnant during production and wanted to be written out of the show so her character Catherine was killed off at the end of Season 2. This caused ratings to drop and the show was cancelled halfway into Season 3.
Trivia: While reading the Anhkana, Ed compares its gruesome contents to writing by Bret Easton Ellis. Ellis is famous for having written the graphically violent novels on which American Psycho and its sequel The Rules of Attraction are based.
The Arrival - S1-E4
Trivia: Michael Cerveris makes his first significant appearance in this episode as The Observer/Bald Man. However if you watch the series from the beginning, he makes fleeting appearances in every episode, sometimes on a tv screen.
Trivia: Despite the series being a critical darling and winning a number of prestigious awards, it was quietly cancelled during its third season in 2011, and network Showtime never gave a reason why the plug was pulled. Star Toni Collette has stated as recently as 2017 that she was still frustrated that the show had been cancelled, as she loved the series and the cast and thought it would have gone on at least a few more seasons.
Crisis on Earth-X, Part 3 - S4-E8
Trivia: Supergirl says to her doppelganger "General, can you step outside." That line was said by Superman in Superman II.
Trivia: In one episode, Aaron Echolls mentions that he was voted People magazine's Sexiest Man Alive in 1987. Harry Hamlin, who plays Aaron, actually did earn that honor that year.
Trivia: Craig says that Manny reminded him of his 5 year old step sister, Angela. In real life Manny and Angela are sisters (Cassie and Alexa Steele).
Trivia: Robert Forster filmed his scene in this episode at the same time that he filmed his scene in El Camino. He is having a phone conversation with Bob Odenkirk, but Odenkirk shot his part later. Unfortunately, Forster passed months earlier (coincidentally on El Camino's release date) and sadly never got to see his work in neither this nor El Camino.
Trivia: Rain Robinson has a model of a DY-100 on the window sill in her office. In 1996 (also the year this episode is set), Kahn left Earth in the SS Botany Bay, a DY-100 class starship.
Trivia: The Dollhouse is run by the Rossum Corporation. The word Robot was first used in a 1920s science fiction stage play about mechanical servants called Rossums Universal Robots.
Trivia: A "Penny Dreadful" was one of several terms used to describe cheap horror comic books that were popular among the lower economic classes of Victorian England.
Trivia: The Widow Twanky was portrayed by Michael Hurst although he would be credited as Edith Sidebottom.