Bloom County has referenced the show a couple of times.
In one storyline, Cutter John and Opus are stranded in the ocean, and are desperate to find land. Then they find an island, and eagerly row towards it...only to find it's Gilligan's Island.
Cutter John: Full astern!
A Running Gag in some of the earlier strips has Opus turning on the TV to find NBC advertising its latest prestige show, only for him to change the channel to a trash show, such as Gilligan's Island.
An Extremely Goofy Movie: While Goofy and Sylvia share their love of 1970's nostalgia, he shows her his "official Gilligan's Island Fan Club seashell".
In A Very Brady Sequel, Carol's first, long deceased husband is said to be The Professor. When con man Roy, who was posing as her husband and had abducted her to Hawaii, suggested that he could have just gotten stranded on an island somewhere, a millionaire who rescued her from him (and whose long-lost son is said to be Gilligan) calls him out on his callousness.
In Dazed and Confused, Cynthia, Jodi and Shavonne start listing their favorite episodes of the show. Later, in the girl's bathroom, Kaye delivers a Take That! speech about the show, claiming the female characters are just there to represent the Madonna-Whore Complex, while the men have no appeal at all. Jodi interrupts to point out, "The Professor...was sexy."
In Down Periscope, while the Stingray is welcoming its wargames crew aboard, Engineman Stepanak isn't impressed with the submarine being used, and he dismissively asks, "What's our mission, rescue Gilligan?"
The Thermians of Galaxy Quest believe Earth televisions showsare real, so when Gwen DeMarco asks their opinion of a clearly fake program like Gilligan's Island, the Thermians' only reply is a solemn, "Those poor people..."
Jumanji: After Alan is released from Jumanji, he's understandably happy to go to an actual bathroom for the first time in 26 years, during which time he sings the Gilligan's Island theme.
The Running Man. The future dictatorship of America has replaced most TV shows with Deadly Game shows as Bread and Circuses. This has led to something of a generation gap where entertainment is concerned. One scene has Damon Killian on the phone to an unseen government official.
Killian: Look, if you want to people in front of the televisions instead of on the picket lines? Well, you ain't gonna get that with reruns of Gilligan's Island. [Beat] Gilligan's Island? [hums a few bars of the theme from Gilligan's Island] Yeah, yeah, the one with the boat.
In There's More Than One Way Home, the seating arrangement in the east parlor looks like it's floating from a distance, so Anna calls the room "Gilligan's Island."
Twelve Days: At Franklin and Margerie's cabin, Hannibal watches a Gilligan's Island rerun on TV.
The ALF episode "Somewhere Over the Rerun" sees ALF becoming infatuated with Gilligan's Island and bothering the Tanners with minutiae about the show and its characters. Eventually ALF has a dream where he hangs out with the actual cast.
Arrow. In one of the flashbacks to when Oliver Queen was marooned on the island of Lian Yu, Slade Wilson sarcastically suggests they look for bamboo so they can build a boat like on Gilligan's Island.
The Golden Girls: In "What a Difference a Date Makes" when Dorothy is at a medieval-themed restaurant with the man who stood her up for her senior prom, there is a server who occasionally walks by strumming a mandolin and singing the Gilligan's Island theme song.
One Halloween Episode that also combines Yet Another Christmas Carol has Roseanne initially meet Dan at a high school Halloween party where she was dressed as Ginger if she never got off the island.
Fittingly, "Sherwood Schwartz: A Loving Tribute" features an extended Imagine Spot of Roseanne's that casts the various family members as Gilligan characters: Jackie as Gilligan, Dan as the Skipper, Leon and Bev as the Howells, Roseanne as Ginger, Mark as the Professor, and Darlene (to her irritation) as Mary Ann. David remains himself in this sequence and is quite confused by his new surroundings. The end credit scene returns the favor with Bob Denver as Jackie, Tina Louise as Roseanne, Russell Johnson as Mark, and Dawn Wells as Darlene, all also to David's confusion.
Salute Your Shorts: One episode has the gang helping Sponge cram for a radio contest and his exhaustion eventually causes him to miss a question by naming characters from the show.
Screech's locker combination is 10-22-42; he says that is equal to Gilligan's birthday.
In "The Election", for some reason, Gilligan and the Skipper are in the running for class president. For the record, Kelly voted for Gilligan.
In "Operation: Zack", the ending has Screech using a remote to turn on the TV to watch the show, which actually adjusts the bed. Seeing how Zack just had knee surgery, he and the rest of the gang shout out "NO!"
"Pipe Dreams" has Zack and Screech cheerfully admit to putting peepholes in the girl's shower, with the latter stating that the former was the Skipper and he was Gilligan.
Another episode has Screech and Sylvester request during a student council meeting that the anniversary of the show's cancelation should be an official day of mourning.
One of the sketches on Short Ribbs is called "Bartygan's Island". Jimmy Briscoe plays the Gilligan expy, Billy Barty plays the Skipper expy, and Patty Maloney plays Jasmine, a Ginger expy.
Sliders: Season 1's "The King is Back" features a quick reference by way of Different World, Different Movies. On the featured world, Quinn and Wade watch Skipper's Island, where he botches yet another rescue attempt (setting fire to a weather balloon to see if it was flammable) and is unable to perform Gilligan and Mary Ann's wedding ceremony.
Supernatural: In Season 4's ''Lucifer Rising'', Zachariah offers an imprisoned Dean a multitude of pleasures in return for his cooperation, including an implied threeway with Ginger and Mary Ann. Dean finds the offer tempting but also weird.
In "Stop Draggin' My Car Around" note a parody of "Stop Draggin' My Heart Around" by Stevie Nicks and Tom Petty and the Heartbreakers , the narrator watches Gilligan's Island before his car gets repossessed.
Al recorded a song called "Isle Thing" note "Wild Thing" by Tone Lōc which is about him bonding with a prospective date over her love for the show. It appears on the soundtrack to UHF.
Gilligan's Island is name-dropped in the song "Couch Potato" note "Lose Yourself" by Eminem.
"Amish Paradise" note a parody of "Gangsta's Paradise" by Coolio directly quotes the theme song: "No phone, no lights, no motorcar, not a single luxury/Like Robinson Crusoe, it's as primitive as can be."
Animaniacs (1993): The Cold Open for Episode 8 features "The Warner's Lot", where the Warners escape from their water tower in a parody of the "Gilligan's Island" theme song.
The Batman: Mr. Freeze's debut episode "The Big Chill" opens with him robbing several cruise ship passengers who are obvious Expies of the castaways.
Batman: The Animated Series: In "Baby-Doll", two of Baby-Doll's henchmen are caricatures of Gilligan and the Skipper.
One Beavis And Butthead episode has the duo "stranded" on a desert island at a mall fountain. Every time card shown for how long they were stuck features a snippet from the Gilligan's Island theme song. Turns out, the "ocean" surrounding the island was only three feet deep.
In "Emotion Commotion", Timmy tells Wanda that, thanks to having no emotions, he is able to think more clearly. He then cites two examples from Gilligan's Island, saying that the reason why they couldn't build a boat is that it would end the series, and the reason why they couldn't build an airplane out of the same material as the little black box is that it would be too heavy to fly.
In "Go Young, West Man", one of the shows in which Catman starred when he was "Catkid" was Catkid's Island.
On Family Guy, one episode establishes that Stewie's full name is Stewart Gilligan Griffin.
Phineas and Ferb: The episode "Swiss Family Phineas" has Lawrence say to Candace, "Don't worry, it's only a three-hour tour."
Pinky and the Brain: In "Pinky's Turn", Pinky's response to Brain's usual question is "If it was supposed to be a three-hour tour, why did the Howells bring all their money?"
In "The Seven Voyages of Cynthia", when Cynthia travels down a waterfall, one of the things that can be seen on the ledge near the waterfall is a bottle with a note in it that says, "SEND HELP! Gilligan."
In "Runaway Angelica", when Angelica takes shelter in Spike's doghouse during a rainstorm, she watches Gilligan's Island on a portable TV until it goes out. Spike is seen watching it at the end.
In "Angelica's Worst Nightmare", when Drew and Charlotte call Angelica into the kitchen to tell her that Charlotte's expecting a new baby, Angelica asks them if they can make it quick, since Gilligan is on in five minutes.
In "Homer's Barbershop Quartet", after Chief Wiggum is kicked out of the Be-Sharps in favor of Barney, Johnny Carson on The Tonight Show calls him, the Skipper and Gilligan one of three castaways. This infuriates him enough to Shoot the Television.