The Very Best Crossover Episodes In TV History

The TV crossover has become a highly anticipated event for many fans who want to see how some of their favorite characters from two or more shows will interact when they meet. Over the years, TV crossovers have been used to pay homage to a show that created a spin-off, to take characters out of their element, and just for the fun of it. These famous episodes include both live-action TV and cartoon crossovers. Here are 20 of the most famous TV crossovers of all-time.

Mad About You / Friends

Mad About You / Friends

In perhaps one of the most beloved crossovers of all time, “Mad About You’s” Helen Hunt ended up in the Village and mistakes Phoebe for Ursula while visiting Central Perk. You make recall that Lisa Kudrow actually started playing Ursula on “Mad About You.” When she left the show they decided to give Phoebe a twin named Ursula on “Friends.”

Episode Name: The One With Two Parts: Part 1 (Season 1, Episode 16).

Family Matters on Full House

Family Matters on Full House

In the late 80s and early 90s there were no shows more popular than “Family Matters” and “Full House.” In this episode, Steve Urkel appears when visiting his cousin who happens to be best friends with D.J. Tanner. Urkel helps Stephanie find a pair of glasses and shouts out his famous like “Did I do that?”

Episode Name: “Stephanie Gets Framed” (Season 4, Episode 16)

Buffy the Vampire Slayer / Angel

Buffy the Vampire Slayer / Angel

Angel left “Buffy” for his own spinoff, but the characters were rooted in the same world so a crossover was inevitable. Cordelia Chase, Wesley, and Spike all became “Angel” regulars, and Angel himself would often stop by Sunnydale. With that being said, the best crossover by far occurred when Buffy followed Angel to L.A., his curse was lifted, and they fell in love again. Buffy’s memory is then erased to save the world, leading to another round of heartbreak.

Episode Name: “I Will Remember You” (Season 1 Episode 8)

Caroline in the City / Friends

Caroline in the City / Friends

In this popular episode, Lea Thompson (Caroline) from “Caroline in the City” stops on the street to have a chat with Joey and Chandler from “Friends.” It’s a simple scene but it was cool to see this crossover. Later, Chandler would appear on “Caroline in the City.” Does anyone else find it totally fine when other show’s characters appeared on “Friends,” but then really weird when the “Friends” universe left its friendly Central Perk confines?

Episode Name: “The One With The Baby On The Bus” (Season 2, Episode 6)

St. Elsewhere / Cheers

St. Elsewhere / Cheers

If you walk into the “Cheers” bar everyone knows your name. In this crossover some of the “St. Elsewhere” doctors show up for a drink. It was a great opportunity to see them in a fully comedic setting on a familiar TV show.

Episode Name: “St. Elsewhere” (Season 3, Episode 24)

Everybody Love Raymond / The Nanny

Everybody Love Raymond / The Nanny

In this episode, Ray Romano shows up at a high school reunion playing Fran Fine’s old classmate. This episode is especially cool because Ray Romano and Fran Drescher actually were high school classmates in Queens.

Episode Name: “The Reunion Show” (Season 5, Episode 18)

Absolutely Fabulous / Roseanne

Absolutely Fabulous / Roseanne

It’s not often we get to see a popular British show on the BBC crossover with a popular American sitcom. That’s exactly what happened on this episode of “Roseanne.” In this episode, Edina and Patsy from “Absolutely Fabulous” meet the Conners during their New York trip.

Episode Name: “Satan, Darling” (Season 9, Episode 7)

24/ The Simpsons

24/ The Simpsons

In “24 Minutes,” Bart Simpson accidentally connects with Jack Bauer’s cell, leading to a bunch of hilarity and drama. This might be the best Simpsons crossover episode of all time.

Episode Name:  “24 Minutes” (Season 18, Episode 21)

Alf / Gilligan’s Island

Alf / Gilligan’s Island

This is by far the most bizarre crossover of all time. To make it happen, “Gilligan” mainstays Bob Denver, Alan Hale, Dawn Wells, and Russell Johnson reprised their characters in a dream sequence. Sadl,y the dream has the cast still living on the island 20 years after making their initial escape. Fun fact: This is the second-longest gap in a crossover in TV history. Only the 1995 “Mad About You” episode that featured Carl Reiner as his “Dick Van Dyke” show character Alad Brand had a bigger gap of 30 years.

Episode Name: The Ballad of Gilligan’s Island” (Season 2, Episode 2)

Magnum, P.I. / Murder, She Wrote

Magnum, P.I. / Murder, She Wrote

This two-part story involved Jessica Fletcher (Angela Lansbury) leaving Cabot Cove, Maine for a nice Hawaiian vacation. It was a very odd crossover because the two shows only had solving murders in common. The only reason this crossover worked at all was because their main characters were both charming.

Episode Name: “Magnum on Ice” (Season 3, Episode 8)

The Jeffersons / The Fresh Prince of Bel-Air

The Jeffersons / The Fresh Prince of Bel-Air

In this episode, “The Fresh Prince” put a quarreling Will and his fiancée Lisa face-to-face with Sherman Hemsley and Isabel Sanford from “The Jeffersons.” Watching “The Jeffersons” crack ‘your mama’ jokes totally makes this episode worth watching. The Jeffersons also appeared on the series finale.

Episode Name: “Will is from Mars” (Seasons 5, Episode 17)

The Six Million Dollar Man / The Bionic Woman

The Six Million Dollar Man / The Bionic Woman

These characters were made for crossovers and they met pretty regularly. “Bionic Woman” was actually a spinoff from “Six Million Dollar Man.” The two characters had an on-again, off-again romance. Our favorite crossover from the two series was “The Return of Bigfoot,” in which the characters actually teamed up to fight Sasquatch, a robot built by aliens.

Episode Name: “The Return of Bigfoot” (Season 4, Episode 1)

Mork & Mindy / Happy Days

Mork Mindy - Happy Days

Mork (Robin Williams) was actually a character that first appeared on the popular TV show “Happy Days.” It only made sense that during the “Mork and Mindy” pilot. Mork the alien would be transported to Earth and bump into The Fonz.

Episode Name: “Pilot” (Season 1, Episode 1)

The Simpsons / Family Guy

The Simpsons - Family Guy

This wasn’t the greatest Simpsons crossover episode of all time, but the hour-long episode was highly anticipated. As expected, it was a crazy mash-up that was instigated when the Griffins’ car was stolen on the outskirts of Springfield. Peter and Homer quickly become friends and Homer invites the Quahogians to stay with the Simpsons. The families duel it out in hilarious fashion.

Episode Name: “The Simpsons Guy” (Season 13, Episode 1)

Batman / The Green Hornet

Batman - The Green Hornet

The Green Hornet and Kato arrive to help Batman and Robin investigate a counterfeit operation in Gotham. TV ads called it the “dynamic duel of dynamic duos.” In a great moment, The Green Hornet and Kato try to figure out how to approach and Batman and Robin. This is by far one of our best TV crossovers for superheroes.

Episode Name:  “A Piece Of The Action” (Season 2, Episode 51)

The X-Files / Cops

The X-Files - Cops

You can’t really crossover “Cops” with “X-Files” in the traditional sense, since “Cops” is one of the original reality TV series. With that being said, Mulder and Scully are interviewed by police during one of their investigations. The episode was filmed in the style of “Cops,” with shaky cameras.

Episode Name: X-Cops (Season 7, Episode 12)

Doctor Who / Torchwood / The Sarah Jane Adventures

Doctor Who - Torchwood - The Sarah Jane Adventures

This is a geek mash-up made in heaven. The episode arrived at the end of the Russell T. Davies era for “Doctor Who.” The series helped launch spinoffs that included both “Torchwood” and “The Sarah Jane Adventures.” The series’ join forces in a final send off against the Daleks. You couldn’t have asked for more nostalgia in this episode.

The Fresh Prince was on Blossom

The Fresh Prince was on Blossom

Blossom goes on a school band trip when she runs into The Fresh Prince of Bel-Air on an elevator. It’s a great moment, especially when we think about Will Smith’s career since then and Mayim Bialik’s turn on “The Big Bang Theory.”

Episode Name: “I’m with the Band” (Season 2, Episode 4)

Arrow / Flash / Supergirl / Legends Of Tomorrow

Arrow / Flash / Supergirl / Legends Of Tomorrow

Supergirl” is moving from CBS to the CW for season 2 and there is already talk from the show’s producers about an “Arrow,” “Flash,” “Supergirl,” and “Legends of Tomorrow” crossover. Supergirl” is joining three shows that have crossed over multiple times and she has already shared the screen with “The Flash.” We have a feeling this is going to be epic.

Episode Name: Unknown (Coming in Fall 2016)

There are hundreds of other crossovers that we could have added to this list, but these were some of the most watched and talked about crossovers to date. Here’s to hoping the CW crossover of superheroes lives up to the hype.