Trivia: The name of the Italian restaurant — Il Mutande Grandissimo — translates to "The Really Big Underpants".
The mob killer who is presumably one of Gibbs' "operatives" is clearly not a gorilla. The killer is much shorter and thinner. In the opening shootout the killer is wearing gloves but glimpses of human skin can be seen between the gloves and the cuffs. The DVD commentary notes that the director and creator deliberately kept it vague, to suggest it might been a human operative, but that doesn't account for the banana dropped at the scene of each crime.
Trivia: In the scene where Wendy is on her bed reading a graphic novel, the cover is for Oddly Normal. Viper Comics produces the graphic novels for that series as well as The Middleman. The title character is a 10-year-old girl, half-witch and half-human, raised by her aunt in the land of Fignation.
Trivia: There are several reference to the band The Zombies. Wendy's alias of "Mrs. Blunstone" refers to Colin Blunstone, the band's vocalist. The group formed in St. Albans: the duo talk to victim Rod Argent is the St. Albans Hospital. Rod Argent is the name of another member of the Zombies. The Atkinson Memorial Insane Asylum refers to band member Paul Atkinson (who also attended St. Albans). Mr. White is named for band member Chris White. The fishery, Odyssey & Oracle, is named after the band's 1968 album.
Trivia: The Middleman claims he's from the American Shrimp and Crab Amalgamated Processors, but says he can't use the acronym due to copyright reasons. The acronym ASCAP belongs to the American Society of Composers, Authors and Publishers... who among other things protect copyrights. (There is no American Shrimp and Crab Amalgamated Processors organization in real life.)
Trivia: There are numerous real-life references to the RMS Titanic and the films and books surrounding it:
* The names Erica Ambler and Ray Ward Baker refer respectively to the writer and director of A Night to Remember (1958), another movie version of the sinking of the RMS Titanic starring Kenneth More, Honor Blackman and Ronald Allen.
* The Middleman uses the aliases of Harland and Wolff. Harland and Wolf is the company that built the RMS Titanic.
* Edward J. Smith High School refers to Edward J. Smith, the captain of the Titanic.
* A school poster in the background says the team is "Fighting Icebergs", a reference to the iceberg that sank the Titanic.
* The Middleman's exclamation of "Sweet Molly Brown!" refers to Margaret Brown, an American socialite aboard the Titanic on its first and final voyage.
It's never explained how Cecil escapes Middleman HQ. They know he's hunting for the tuba, and he's not to be trusted, so it's unlikely they'd let him go until they at least recover it, and nothing in the episode establishes they let him go.
Trivia: The Middleman uses the aliases of Boetticher and Kennedy Budd. Boetticher directed Ride Lonesome and Burt Kennedy wrote the screenplay.
Trivia: 8660 Hawks Lane refers to famed Western director Howard Harks, who directed classics like Rio Bravo (1959) and Red River (1948). The Peckinpah hotel refers to Sam Peckinpah, who wrote and directed dozens of Westerns, and is best known for his ultra-violent style in such movies as The Wild Bunch (1969).
Trivia: Eleanor June Draper (Ashley Johnson) is named after one of the founding sisters of the Delta Delta Delta (ΔΔΔ/Tri Delta) sorority, Eleanor Dorcas Pond. Episode writer Sarah Watson is a sister of Tri Delta.
Trivia: The metal spherical look of the Truth Bomb, BUMMER, and stun field generator are deliberate references on prop master Gregory M. Edgar's part to the thermal detonator belonging to the bounty hunter Boushh in Return of the Jedi (1983).
Trivia: An ångström is a measure of length (equivalent to 10^(-10) meters). Nonsensically measuring a fuel source in terms of length was a deliberate reference to Star Wars: A New Hope (1977), when Han Solo boasts of making the Kessel Run in "less than 12 parsecs".
Trivia: The Middleman can be seen reading a book on vampires by "A. Dixon". Previously he was reading Bitten by Zombies: A Coping Guide by the same author in "The Flying Fish Zombification".
Trivia: One of Ida's sarcastic remarks, "Is it 4:20 already?", references cannabis culture. Four-twenty (4:20 or 4/20) originated at San Rafael High School in the early '70s.
Trivia: Wendy's line "...an encyclopedic knowledge of Christopher Lee and Peter Cushing's work for Hammer Films." refers to the two British actors who worked together in four Dracula movies together: Dracula (1958), Dracula: Prince of Darkness (1966), Dracula A.D. 1972 (1972) and Satanic Rites of Dracula (1973). They became close friends through their work. However, they appeared in many other movies both with Hammer and without.
Trivia: Wendy's line "...and I've laid eyes on at least three of the major Canadian syndicated vampire detective shows." refers to at least two definite programs, Forever Knight (1989-96) and Blood Ties (2007-08). It's not clear what the third series is.
Trivia: The Middleman's reference to "Bram Stoker's widow" refers to Abraham "Bram" Stoker, the creator of Dracula in 1897. Stoker took the historical figure of Vlad the Impaler and combined him with Eastern European mythology concerning the undead as the basis for his seminal work.
Trivia: Wendy comments that Maximum Aldwin sounds "like Graham Chapman and [dresses] like a Vestal virgin". Graham Chapman is one of the six members of Monty Python's Flying Circus. He played many roles on the show, mostly authority figures, and is best known for playing the Colonel, who interrupted many of the skits to insist that they stop because they were offensive. He also played King Arthur in Monty Python and the Holy Grail. Chapman passed away in 1989.
Trivia: Tyler mentions The Return of Bruno, Bruce Willis' 1987 debut album. The album peaked at #14 on the Billboard 200 album chart.
The term "nanobot" appears in dozens of science fiction films, television shows and novels. And yet somehow Wendy doesn't recognize the term despite her vast knowledge of science fiction trivia.