Private Madness, Public Danger - S1-E1
Trivia: This, the first ever episode of the series, was first broadcast on ITV on December 30th 1977. It was repeated on ITV in 1979. Some time after this, a cut was made, which has endured on all subsequent UK TV transmissions: Just prior to the title sequence, we see Nesbitt hand Susan some drugs. In the original broadcast we then see Susan tightening her belt around her arm. Using Nesbitt's cigarette lighter to sterilise a needle, she then "shoots up" (injects the drugs in her arm). The excision may have come about because of a tightening up of censorship rules by the Independent Broadcasting Authority about the explicit use of illegal drugs on TV. However, the missing segment has been restored for the 2002 DVD release.
The Crab with the Golden Claws: Part 1 - S1-E1
Trivia: When Kuraki attempts to put the letter in Tintin's mail box before getting ambushed, the mailbox next to Tintin's is labelled Herge, the creator of Tintin. (00:05:40)
Alienation - S2-E2
Trivia: Pierce and Moretti are questioning a woman at her front door. The doorbell chime is the theme from Close Encounters of the Third Kind. Fittingly, she thinks her husband was abducted by aliens.
Trivia: When Barry is checking the results of his tests in the police lab, he turns to the computer to view the screen. The camera changes to see the screen, and for just a moment (just a few frames) we see what was on the screen before his results - a couple of stolen car reports, one of which is that of "Joliet Jake Blues" (from the Blues Brothers movie). And yes, the car and licence are the same as in the movie. I don't know what the connection is; I assume someone on the crew loved that movie. (01:12:00)
Trivia: In the flashback scene at the beginning of Episode 4, the young Stavros Milos finds a case of money buried in the snow, next to a fence on the road where his car runs out of gas. This is the same case that Carl Showalter buried there in the 1996 Fargo movie. It was the ransom money for Jerry Lungegard's wife. Stavros apparently used it to start his grocery business.
Episode #1.6 - S1-E6
Trivia: In the park where PS Budd is surrounded by armed tactical response officers, a careful observer would notice that the brand of ear protection devices the officers are wearing are Z-TAC, an airsoft brand.
Trivia: Lorraine Toussaint is only 9 years older than Morris Chestnut, who plays her son.
Crisis on Infinite Earths: Part Two - S1-E9
Trivia: The version of Batman played by famous Bat-voice Kevin Conroy is a darker version of that from the graphic novel The Dark Knight Returns. The line "the world only makes sense when you force it to" is a version of a line from that comic (also used in Batman V Superman), also "Clark always said yes to anything with a badge or a flag." There are also elements from Batman Beyond, which first aired in 1999 (hence Earth-99), in which Conroy voiced an older Bruce Wayne mentoring a new Batman. The whole scene is full of nods to other versions - describing Kryptonite as "a little souvenir from the old hometown" is a Lex Luthor line from the original Superman movie, and him describing Superman as "strange visitor from another planet, with powers and abilities far beyond those of mortal men" comes from Superman serials from the 40s and 50s.
Trivia: Charlie (Milo Ventimiglia) is asked to help break someone out of prison. He says he doesn't do prison breaks. Listening in on the bug Charlie is wearing is his sister Birdie, played by Sarah Wayne Callies. Callies starred in Fox's Prison Break.
Trivia: While Camille is in severe distress back at Crellin Manor, a pensive Willis examines the interior of the sensor bar, trusting his subconscious to sense a clue. One of the things his eyes pass over is a bumper sticker with two American flags, originally stuck to the underside of the moveable piece of the bar top. Thus, the flags on the sticker are upside down, a sign for distress.
Episode #7.5 - S7-E5
Trivia: The Matron is called Fletcher. Louise Fletcher played the chief nurse (and a similar character) in "One Flew Over the Cuckoo's Nest."
Trivia: Camryn Manheim uses sign language with her client, played by Marlee Matlin. Before becoming an actress, Camryn Manheim actually worked as a sign language interpreter and job trainer/placement specialist for the deaf. She also used her sign language skills in an episode of "Law and Order" called "Benevolence," where she portrayed a defense attorney for a deaf man accused of murdering his girlfriend.
Trivia: The fuel station features metal miniblinds in several scenes. These did not become available until the early 1940s and would aluminium be diverted from airplane production to blinds?
Trivia: R.D. Wingfield, author of the book "Frost" on which the series is based, hated the show.
Trivia: The blue Ford Cortina squad car seen in series 1 and 2 has the reg number NHK 296M. Sometimes it is fitted with a false number DLO 97M on the front (as has been noted as a mistake). The programme makers had been supplied with two cars from Ford, this Cortina and a Consul GT. The Cortina was fitted with this false plate to make the squad look like it had more cars, and only one number plate (the white front one) was made up to keep costs down, as the Sweeney had a small budget. In the series 3 episode "Pay Off" DLO 97M is on a white Cortina, in series three the same Triumph 2000 is seen with number plates TPA 931N and UUV 931N - again it is the same car with different number plates.