While the connected universes are all the rage in movies these days, television crossovers are much rarer. However, there have been some memorable examples in the sitcom world when two beloved shows would occupy the same space, much to the delight of the collective fandom.

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It is true that these crossovers sometimes feel like marketing gimmicks more than episodes and the combination of shows don't always work. But it can also be hard not to have fun with seeing some favorite characters join forces to deliver some laughs and entertainment to viewers.

The Jeffersons & Fresh Prince Of Bel-Air

George Jefferson laughing with Will Smith in Fresh Prince of Bel-Air

After first appearing on All in the Family, George Jefferson was given his own ground-breaking sitcom with The Jeffersons. So it was a thrill to see him and several of the show's characters appear in the final episode of Fresh Prince of Bel-Air.

George appears as a potential buyer of the Banks' mansion. As Will shows him and his wife Florence around, they continue the same bickering banter they exchanged back in their own series.

Sabrina The Teenage Witch & Boy Meets World

Cory and Shawn make a phone call in a Boy Meets World and Sabrina The Teenage Witch crossover

Though many fans are still sad over the cancellation of The Chilling Adventures of Sabrina on Netflix, they might not realize that the character was first part of the wholesome lineup of sitcoms on ABC that included Boy Meets World.

This ends up being quite a strange crossover as Sabrina's talking cat Salem appears in Boy Meets World and transports the characters back in time. It was a little strange combining Sabrina the Teenage Witch's supernatural world with the more grounded one of Boy Meets World.

The Simpsons & King Of The Hill

Hank Hill watching a football game on The Simpsons

Not all crossover events need to be substantial. Some can be small gags thrown in to give fans a quick laugh. Such is the case with the brief moment King of the Hill crossed over with The Simpsons.

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In the episode, "Bart Star", Bart joins a successful pee-wee football team with Homer as the coach. After winning another game, it is revealed the rival team was from Arlen, and Hank Hill is seen in the stands with his family commenting on how disappointing it was to drive all the way from Texas for the game.

The King Of Queens & Everybody Loves Raymond

Ray Barone in the store with Kevin in King of Queens

Kevin James became a star thanks to his hit sitcom The King of Queens. However, some fans might have forgotten that the show is actually a spinoff of Everybody Loves Raymond as Kevin's character appeared there first.

Ray Romano actually appears on King of Queens on several different occasions as Ray Barone while the other main characters from Everybody Loves Raymond also make appearances in these episodes. It is a fun way of reminding audiences of the connection and Romano and James share a fun comedic chemistry.

Friends & Mad About You

Helen Hunt in Central Perk in Friends

Along with Phoebe being a central character on Friends, Lisa Kudrow also plays Phoebe's twin sister Ursula. Unlike Phoebe, Ursula is a rude and dismissive person. However, she is actually a character who originated on the series Mad About You.

Early in Friends' run, Kudrow was also a recurring character on Mad About You as the incompetent waitress Ursula. Though Ursula appears in several episodes of Friends, the connection is addressed when characters from Mad About You stop in at Central Perk and mistake Phoebe for Ursula.

New Girl & Brooklyn Nine-Nine

Jake Peralta meeting Jessica Day on New Girl

Most sitcoms stick closely to the main city the show takes place in but include the occasional episodes when the characters visit somewhere new. Such is the case in New Girl's episode "Homecoming" when Jess and the gang leave Los Angeles for New York and find themselves crossed over with New York-set Brooklyn Nine-Nine.

The crossover is a bigger one than most as it occurs on both New Girl and Brooklyn Nine-Nine with the two separate shows showing their sides of the encounter between Jess and Detective Jake Peralta.

The Simpsons & Family Guy

Peter Griffin sitting on the couch with Homer Simpson in Family Guy.

There have been several times in The Simpsons where jokes have been made about Family Guy feeling like a copy of their show. This is explored even further in an episode of Family Guy titled "The Simpsons Guy."

The episode finds the Griffin family visiting Springfield and meeting The Simpsons. Homer and Peter become fast friends until Homer realizes that Peter's favorite beer is a copy of his beloved Duff Beer. It is a fun episode that combines running gags from both series and includes some fun character pairings.

Community & Cougar Town

Split image of Abed in Community and Cougar Town

For two shows that seem to have very little in common, Community and Cougar Town delivered one of the funniest and more intricate crossover moments ever. It all started in the episode of Community entitled "Critical Film Studies."

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In the episode, Abed tells Jeff a story about getting a job on his favorite show Cougar Town as an extra but getting so excited that he soiled his pants. In the Cougar Town episode "Something Good Coming," Abed can be seen sitting in the background of one scene before suddenly running off the set.

The Flintstones & The Jetsons

Fred Flintstone and George Jetson meeting

There are countless beloved Hanna-Barbera cartoon characters but the Flintstones and the Jetsons are the most iconic. Despite millions of years separating them, the two families end up meeting in an epic TV movie appropriately called The Jetsons Meet the Flintstones.

The movie follows the Jetsons using a time machine and going back to prehistoric times, meeting Fred and his family in Bedrock. But a mix-up causes the Flintstones to time travel into the future while the Jetsons are left in the past.

Family Matters & Full House

Split image of Steve Urkel in Family Matters and Stephanie Tanner in Full House

Though the ABC sitcoms became known for crossing over, as seen with Sabrina and Boy Meets World, the whole shared universe concept may have started when Steve Urkel visited the Tanner household.

In an episode of Full House entitled "Stephanie Gets Framed," young Stephanie Tanner is embarrassed at needing to wear glasses. However, when Steve Urkel from Family Matters visits the house, he gives her a pep talk that helps her feel better. There is even a moment in which Uncle Jesse teaches Steve how to be cool.

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