Last week, TV network The CW finished
Crisis On Infinite Earths, its 5-part series where its various superhero TV shows had a "crossover event" that mirrored -- but, thankfully, didn't match -- the 1985 DC Comics event created by comic book writer Marv Wolfman, who made a guest appearance in the 5th and last episode.
This is not the 1st time that characters from one TV show have appeared on another. In fact, it's quite common. And we can even give names to the "worlds" or "fictional universes" in which it's happened.
Earth-A: All In the Family and its spinoffs take place on this world.
AITF spun off
Maude, which spun off
Good Times. AITF also spun off
The Jeffersons, which spun off
Checking In.
Bea Arthur played Maude Findlay, and she also played Dorothy Zbornack on
The Golden Girls. Rue McClanahan played Vivian Harmon on
Maude, and she also played Blanche Devereaux on
The Golden Girls. That show spun off
Empty Nest, which spun off
Nurses, all taking place in Miami, and there were crossovers.
I'd like to believe it took place on the same world as
The Mary Tyler Moore Show, which had Betty White as Sue Ann Nivens, because Betty also played Rose Nylund on
The Golden Girls.
Lou Grant was a spinoff of
The MTMS, so they definitely took place on the same world.
One thing is for certain:
Murphy Brown, in her show of the same name, had a magazine cover with Archie Bunker on it framed on the wall of her office, so her show and Norman Lear's AITF franchise do not take place on the same world.
Maybe we can say that, barring evidence to the contrary, all TV shows not otherwise mentioned take place on this world.
Earth-B: B for Brooklyn.
Welcome Back, Kotter was set in Brooklyn, at fictional James Buchanan High School in the 1970s.
Head of the Class was set in Brooklyn, at fictional Millard Fillmore High School, also named for a pre-Civil War President, in the 1980s. Granted, that doesn't mean they took place on the same world. But the parallels are uncanny, including the unconventional teacher, the cynical principal, and the misfit kids -- remedial ones in the former, advanced-placement geniuses in the latter.
Another 1970s-'80s ABC sitcom,
Barney Miller, would have fit right in, taking place across the East River in Manhattan, at the fictional 12th Precinct. However, in the final episode, "The One-Two" was closed down, as the show's fictional version of the New York Police Department redrew its precinct lines. This rules out the 2010s cop show
Castle taking place on the same world: Their world's 12th Precinct was still in use, albeit in a different building.
One thing I've noticed:
Castle (set at the fictional 12th),
NYPD Blue (set at the fictional 15th), and
The Mysteries of Laura (set at the fictional 2nd, and the only one of these not on ABC, rather on NBC) all used the same location for their exterior shots: The 9th Precinct, at 321 East 5th Street, on Manhattan's Lower East Side. (That's it, in the photo.)
This building opened in 2007, having been built on the site of a previous precinct house that stood from 1912 to 2002. It was the 15th until 1929, when it was renamed the 9th, and the number 15 was carved into the sidewalk pediment, inspiring the precinct number on
NYPD Blue. This older building was used for exterior shots of
Kojak (set at the fictional 11th Precinct),
Cagney & Lacey, and
NYPD Blue; the others used the new one.
Life On Mars was set at the fictional 125th, but, unlike any show using the 9th, their precinct house was on a corner, so it's not the same one.
Cagney & Lacey was set at the 14th Precinct, which does exist in real life, but is usually called "Midtown South," a name that was referenced on
Barney Miller several times; but their neighborhood was called "Alphabet City" because of Avenues A, B, C and D, and that same subset of the Lower East Side was patrolled by the 15th squad of
NYPD Blue, and we've got, to use a New York expression, a bit of a kerfuffle.
So none of these shows --
Kojak, Barney Miller, Cagney & Lacey, NYPD Blue, Life On Mars, Castle or
The Mysteries of Laura -- takes place on the same world as any of the others. But that doesn't mean one of these cop shows can't share a world with another show.
Brooklyn Nine-Nine takes place in the fictional 99th Precinct, and had a crossover with
New Girl. Might these shows take place on the same world as
WBK, HOTC and
Barney Miller? What about other Brooklyn-based shows? How about
The Honeymooners? Or
The Patty Duke Show? Or
Living Single?
The Cosby Show was set in Brooklyn, and
A Different World was a spinoff of it. And
The King of Queens and Long Island-based
Everybody Loves Raymond had a crossover.
Earth-D. The Dick Van Dyke Show starred Dick Van Dyke as Rob Petrie, a writer for a TV variety show named
The Alan Brady Show. That show existed on the same world as
Mad About You, but about 30 years earlier. Not only was
The ABS mentioned on a 1995 episode of
MAY, but Carl Reiner played Brady on it. And Helen Hunt played both Jamie Buchman in the present and her mother, Theresa Stemple (then using her maiden name, Terry Cooper) in a flashback scene of
The ABS.
And
MAY was on the same world as
Seinfeld and
Friends. (And a now-forgotten sitcom titled
The Single Guy.) We know this because Cosmo Kramer from
Seinfeld (Michael Richards) appeared on
MAY, and Ursula the waitress on
MAY turned out to be the twin sister of Phoebe Buffay on
Friends
(both played by Lisa Kudrow, and confusing the hell out of
MAY's Jamie and Leila Kenzle as Fran Devanow when they dropped by Central Perk).
However, Mary Tyler Moore's presence as Laura Petrie on
The DVDS does not necessarily put that show on the same world as
The MTMS.
Earth-F: For for Friday. ABC's "TGIF" sitcoms were all linked.
Perfect Strangers spun off
Family Matters, whose character Steve Urkel (Jaleel White) made guest appearances on
Full House and
Step By Step. The actions of Salem the cat (voiced by Nick Bakay) on
Sabrina the Teenage Witch affected
Teen Angel,
You Wish, Boy Meets World, and, retroactively,
BMW's successor series
Girl Meets World.
Earth-G: It's been established that the ABC soap operas
General Hospital, its spinoff
Port Charles, and
One Live to Live take place on the same world. It is safe to presume that another ABC soap,
All My Children, also does so.
Earth-H: H for Hooterville. CBS "rural" comedies
The Beverly Hillbillies, Green Acres and
Petticoat Junction had crossovers in the 1960s.
Earth-I: I for
The Incredible Hulk. The Bill Bixby & Lou Ferrigno CBS version of 1977-82 was very different from the comics' version of the Hulk. The human form was still a scientist who made a mistake with radiation, but the method and his motivation were different, and so was his name: The Robert Bruce Banner of the comics (sometimes "Bob" but usually "Bruce") became David Bruce Banner (always "David," and, to hide his identity, using last names starting with B, such as Brown and Baxter).
In 1988, '89 and '90,
The Incredible Hulk had return movies that featured versions of Thor and Daredevil that weren't much like either the comics or the MCU, and bombed so badly that neither got the show that these "backdoor pilots" were trying to establish. While there were no other crossovers, it's likely that this world also includes the bad
Spider-Man,
Captain America and
Doctor Strange TV-movies of the late 1970s.
Earth-L: L for Los Angeles. Jack Webb first produced, directed, frequently wrote, and starred as Detective Sergeant Joe Friday on, the police drama
Dragnet from 1951 to 1959, using one of many lines from the show that entered the public consciousness: "This is the city: Los Angeles, California."
With his production company, Mark VII Limited, he revived it from 1967 to 1970, but he didn't stop there. He also produced the police drama
Adam-12 and the medical drama
Emergency! And he had characters cross over between the 3 series, all on NBC.
Emergency! was created by Harry Jack Bloom, who also created
Hec Ramsey, a combination Western and police drama set in 1901 Oklahoma, starring Richard Boone, who had previously played the cultured gunman-for-hire Paladin on
Have Gun -- Will Travel. On an episode of that show, which was on CBS, Paladin cites a familiarity with the career of Marshal Matt Dillon, the lead character of the defining CBS Western,
Gunsmoke, suggesting that they took place on the same world.
Boone described Hec Ramsey as "Paladin, but fatter." And, clearly, older. So those 3 shows can be said to have taken place on the same world. Was it the same world as
Dragnet, Adam-12 and
Emergency, 70 or so years later?
What about
Bonanza, on NBC, set in 1860s Virginia City, Nevada? As far as I know, there is no link between it and any other show, unless you want to count the later movies based on it, and the prequel show
Ponderosa, which changed several details.
What about other L.A.-set crime-related shows of the 1970s?
Columbo?
The Rockford Files?
CHiPs?
Quincy, M.E.? I know of nothing that would rule those shows out.
Starsky & Hutch took place in fictional Bay City, a name which would suggest San Francisco, but the city was said to be in Southern California, and was clearly filmed in L.A.
Worth noting: ABC's
Modern Family takes place in Los Angeles, but, on their world,
Game of Thrones does not exist. Instead, there is an analogue show of which Phil Dunphy (Ty Burrell) and his brother-in-law Mitchell Pritchett (Jesse Tyler Ferguson) are fans, to the point of cosplaying at a convention.
Earth-M: M for Mayberry.
The Danny Thomas Show spun off
The Andy Griffith Show, which spun off
Gomer Pyle, U.S.M.C. Given Mayberry's rural setting, it's tempting to say that it takes place on the same world as the Hooterville shows.
Earth-N: N for Navy. All the
NCIS shows, their base show
JAG, and the recent CBS reboots of
Hawaii Five-O, Magnum, P.I. and
MacGyver have been established as taking place on the same world.
The original
Magnum had a crossover with
Murder, She Wrote. But, as far as I know, they can't be linked with any other show, including the original
Hawaii Five-O (whose last episode aired on April 5, 1980, 8 months before
Magnum debuted in Hawaii on CBS) or the original
MacGyver.
Earth-P: P for Public Broadcasting Service (PBS). Mr. Rogers made a guest appearance on
Sesame Street, and that show's Grover made one on
The Electric Company. And
Spider-Man appeared on
The Electric Company. But this was a very different Spidey than has appeared in comic books and any movie thus far seen, so it's not Tom Holland's version from the current Marvel Cinematic Universe.
Earth-R: R for Rhimes. All of Shonda Rhimes' "Shondaland" shows are linked, including
Grey's Anatomy, Private Practice, How to Get Away With Murder, Station 19, and
Scandal. Too bad, because
Scandal shows things to be truly screwed-up. Seriously: Would you want to live in a world where the choices for President are Fitz Grant and Sally Langston?
Earth-S: S for
Star Trek. The world we've known from 1990 or so onward doesn't match the "Star Trek Timeline." No, we haven't gotten out of our solar system by the dawn of the 2020s. But we also avoided the Eugenics Wars of the 1990s. All of the Trek shows and movies take place in that timeline.
These include the past sequence of
Star Trek IV: The Voyage Home (1986), the past sequence of
Star Trek: First Contact (2063),
Star Trek: Enterprise (2151-61),
Star Trek: Discovery (2256),
Star Trek (a.k.a. "The Original Series," 2266-69),
Star Trek: The Animated Series (2270),
Star Trek: The Motion Picture (2273),
Star Trek II, III, IV and
V (2285-86),
Star Trek VI and the early part of
Star Trek: Generations (2293),
Star Trek: The Next Generation (2364-70),
Star Trek: Deep Space Nine (2369-75),
Star Trek: Voyager (2371-77), the
TNG movies (2371-79), and, debuting this week,
Star Trek: Picard (which begins in 2399).
And it includes all trips back in time on the various shows, including (but not limited to) Earth in 1893, 1930, 1944, 1947, 1957, 1968, 1969, 1996, 2004 and 2024. (The Bell Riots are just 4 years and 7 months away now, and it's not hard to imagine Donald Trump making things bad enough for that to happen.)
The J.J. Abrams movies with the Star Trek label? As Captain Kirk (the only one, played by William Shatner) would say, "Go to the Devil!"
While
The Orville shares many similarities with
Star Trek, and especially appears to be an homage to
The Next Generation, it clearly does not take place in the same universe.
Earth-T: This is "the Tommy Westphal Universe," inspired by the last scene of the NBC medical drama
St. Elsewhere, which aired in 1988. Based on characters that appeared on that show, and characters from that show that appeared on others, and other references dropped, we know that this world includes
The White Shadow, Cheers, Frasier, Homicide: Life On the Street, The X-Files and its spinoff
The Lone Gunmen, Millennium, every
Law & Order show, and every show in NBC's current
One Chicago franchise.
UPDATE: A character from
Chicago P.D., Detective Hailey Upton, played by Tracy Spiridakos, has since appeared on an episode of
FBI, despite that show being on CBS, because it has the same producers. So that series, and its spinoff
FBI: Most Wanted, also exist on this planet.
Earth-W: As far as I know,
The West Wing (NBC, 1999-2006) has never crossed over with another show. But it did the "fictional President" thing better than any show ever has, so I'm giving it its own world.
The
Peanuts specials and
The Beverly Hillbillies were mentioned on
The West Wing, ruling them out as taking place on the same world.
Do you know of any others? I'm not doing any
Simpsons-related crossovers. You want those, write your own blog.