In Season 1, after a disastrous dance, Dawson, Joey, and Pacey walk home.
Dawson: So, what have we learned from tonight’s 90210 evening?
In Season 3, Jen mentions she heard Luke Perry is back on 90210.
The Fresh Prince of Bel-Air: In the episode where Will and Carlton are pledging a fraternity, the latter tries to tell the uninterested pledge leader about the show and how Dylan and Brenda are getting back together. Will tries to stop him from embarrassing himself...but is then excited about the notion of them reuniting.
Gilmore Girls: Lane mentions (incorrectly) that Donna waited until marriage to lose her virginity.
New Girl: Jess thinks Cece is into Nick and tries to set them up even though it breaks her heart, referencing that she feels like Brenda when Dylan and Kelly got together. Winston is not versed in 90210:
Winston: Dylan. Was his nickname ‘The Peach Pit’?
Saved by the Bell: In "Screech's Spaghetti Sauce", as Zack flirts with new gold-digging student Robin and learns she's from Beverly Hills, he says that his favorite zip code is 90210.
That '90s Show: When Leia's down in the dumps over Nate dating someone else, she watches constant reruns of 90210 and when Ozzie complains, she explains how she is like Brenda because she didn't go for the guy. Complete with a Fantasy Sequence featuring a cameo from Brian Austin Green as Season 1 David.
Insane Clown Posse were not fans of this show, as evidenced by their extended play Beverly Kills 50187, in which they fall asleep watching it, wake up enrolled in the show's high school, and proceed to murder all of the show's characters.
Dinosaurs: "Network Genius" features a TV show called Pangaea Hills: Dino210. In the show, a teenage dinosaur tells her friend that she is "in trouble". When her friend asks her to prove it, she does so by showing to him that she has laid an egg.
The episode "The Motor City Maniac" introduces Napoleon Brie, voiced by Luke Perry. When Brie's subordinate Number One tells the Biker Mice "this isn't Beverly Hills," it leads to this glorious exchange from Vincent (voiced by Ian Ziering):
Vincent: Don't I know you from someplace, nutso?
Napoleon Brie: Maybe we went to high school together.
Scooby-Doo! Mystery Incorporated seasons 1 and 2 feature Brenda and Dylan expys named... Brenda and Dylan. They’re constantly getting attacked by monsters while trying to go on dates. Brenda in this universe is different from the show in that she’s sometimes snobby.
In "Missionary: Impossible", Dylan McKay appears among the Fox Network characters taking pledges at the Fox telethon, along with Dana Scully and Fox Mulder, Thurgood Stubbs, Hank Hill, and Bender, with Fox president Rupert Murdoch also there taking pledges.
One season 20 episode is named "Waverly Hills 9-0-2-1-D'oh".
