"Lyre, Lyre, Hearts on Fire" opens with Xena, Gabrielle and Joxer breaking into a rendition of Edwin Starr's War and spends the rest of the episode having two warring parties fight it out in a battle of the bands rather than with swords. This episode followed up right after several very serious episodes too.
"Married With Fishsticks", which mostly forgets about the story arc going on at the time to do a pointless filler episode where the feuding Aphrodite and Discord accidentally send Gabrielle into an alternate world where she's a mermaid, and is entirely populated with merpeople. The whole thing is incredibly weird, and ends with it apparently being All Just a Dream as Gabrielle wakes up back with Xena.
Given that this was in season 5, it's noted on the DVD special features that everyone was quite wary that this not be the show's 100th episode.
The season 6 Clip Show "You Are There": a 20th century reporter (played by Michael Hurst) runs around Ancient Greece interviewing people about our heroines.
Multiple episodes taking place in modern day with the principle actors playing reincarnations/descendants/look a likes of themselves, because...why not?
News that the reboot would be doing away with the ambiguity of Xena and Gabrielle's relationship has received mixed reactions.
The reboot also has suffered controversy for having Javier Grillo-Marxuach as the show runner, after he was partly responsible for a very high profile case of Bury Your Gays on The 100 that opened the floodgates to the trope becoming a hot button issue across the TV landscape.
Draco in Leather Pants: This trope's even funnier when you realize there really IS a guy named Draco in Xena, and that he DOES wear leather pants. The show even plays the trope straight after everyone was suddenly made to love each other by Cupid's playful son, who somehow got a hold of daddy's arrows. The effect was later reversed, except for Draco. Xena suggested Cupid not undo this one to make the warlord a better, less dangerous-to-society person. This comes back to haunt them in a later episode.
Evil Is Sexy: Callisto and Ares. Well, everyone is sexy in this series, but the villains tend to be sexier than the average peasant.
There is also Athena.
Foe Yay: Xena and Callisto, Xena and Ares, Gabrielle and Ares.
In the early season one episode "Cradle of Hope", Gabrielle scorns the idea of someone sending a baby down a river. Then came the season three episode, "Gabrielle's Hope", in which Gabrielle sends her (evil) newborn baby down a river rather than kill her — an act that comes back to haunt Xena and Gabrielle in a big way.
The many deaths of Joxer who died permanently in season 5.
Ares falling out of the sky after Gabrielle accidentally depowered him. Sadly, Kevin Smith died in kind of the same way.
In "Remember Nothing," Xena is finally driven to take back her wish upon seeing Gabrielle kill someone. Congratulations, you've saved your partner's innocence...for a whole one year.
"Dreamworker" was the first episode to address blood innocence and the importance of Gabrielle maintaining it. The final scene sees Xena compare a first kill to throwing a stone in the lake, saying the stone will always remain under there and that the lake is forever changed. Cut to "The Deliverer": Gabrielle kills for the first time and laments that Nothing Is the Same Anymore.
During "The Execution," Gabrielle learns that Meleager lied to her about quitting drinking. She takes that hard, later telling Xena that friends don't lie to each other. That sure takes on some new meaning when you watch the endings of both "Gabrielle's Hope" and "The Debt" two-parter.
He Really Can Act: Hudson Leick played bit parts in soaps and never really garnered any attention... until she played Callisto. The range and depth of her acting as well as her development of the character was just insane (... as in insanely awesome). When she had to play Xena for a couple of episodes (Makes Sense In Context) she was jaw-droppingly good, and she played one of the most complex and heart-rending villains to ever grace the television screen without dropping a beat. It was her acting as a reformed Callisto that justified the entire existence of the "Xena and Gabrielle die and become angels" plotline.
Heartwarming in Hindsight: "The Key to the Kingdom" ends with Meg certain she'll never have a family of her own and Xena trying to convince her it is possible. After Season 5's Time Skip, viewers see that Meg did have a family with Joxer.
The homoerotic relationship between Xena and Gabrielle constantly walked the line between subtext and text.
It's text in the modern-day reincarnation episodes, they get married and everything.
Xena and Callisto. Although, that was more Foe Yay.
Gabrielle was canonically lusted after by a Valkyrie in a later season, and it was implied that Najara was in love with Gabrielle as well.
Xena: (about Najara) "She's a tough girl, but she's got a weakness. It's the same one I've got."
In "The Play's the Thing", Gabrielle's play convinces two girls to become "thespians".
There's also Lao Ma, who attempted to teach a younger, angrier, Xena the value of peace, and of dancing with girls. They share an Underwater Kiss at one point, and when Xena says she's willing to serve Lao Ma, Lao Ma says, "It's easy to serve someone you love."
Xena and Najara have some philosophical differences, but sometimes when they argue it's like they're just fighting over Gabrielle.
My Real Daddy: Although John Schulian created the character in Hercules for the episode The Warrior Princess his Xena was more of a Femme Fatale and then a Distaff Counterpart to Hercules. It was the head writer for Xena, RJ Stewart who refined the character as we know her.
Narm: Livia/Eve's bad acting causes this. When she's angry she sounds less like Rome's champion and more like a Valley girl.
Nausea Fuel: "In Sickness and In Hell" sees Xena suffer from a nasty case of lice, Gabrielle getting disgusting foot rot, and bad cooking leading to stomach poisoning (which includes a moment of Gabrielle vomiting on Joxer). The production staff didn't miss this reaction to the episode, either; "Deja Vu All Over Again" features an exchange about how repulsive and unfitting for the show it all was.
Retroactive Recognition: This show provided a stepping stone for many now-familiar faces in the science-fiction circuits, such as pre-Roswell Shiri Appleby, pre-Firefly Gina Torres, pre-Farscape Claudia Black, pre-iZombie Rose McIver, and pre-Hellboy Selma Blair. There was also an early appearance from Kathryn Morris of Cold Case fame, and Manu Bennett almost a decade before his roles in Spartacus and Arrow. (Other Spartacus actors who earlier appeared on Xena include Craig Parker, Kevin J. Wilson, Antonio Te Maioha, Stephen Lovatt, Craig Walsh-Wrightson, Jeffrey Thomas, and Peter Feeney.) And of course, Karl Urban, who played no less than four different characters across the first five seasons.
Scapegoat Creator: Fans complained loudly and often about Season 5 at the time, usually blaming new show-runners Alex Kurtzman and Roberto Orci for everything. Apparently, it wasn't just the fans who felt this way, as Kurtzman and Orci were suspiciously gone about halfway through the season. While being show-runners made them responsible for many creative decisions, they nonetheless still had to answer to Rob Tapert. The series was also hurt by The Lord of the Rings's production, as a number of experienced, local personnel left to work on the big-budget trilogy.
Seasonal Rot: Season 5 is generally regarded by Xena fans as when the show went downhill, with some going so far as to call that season's "Twilight of the Gods" arc one of the worst in tv history, while season 6 is met with a Broken Base, particularly the two-part finale, although many at least consider it an improvement over season 5.
Special Effects Failure: Some of the CGI and blue-screen effects used in the earlier episodes (such as in "The Titans", "Prometheus" and "Mortal Beloved") have not aged well. Somewhat justifed, as the budget wasn't exactly high.
Strawman Has a Point: The gods in the "Twilight of the Gods" arc. They are trying to take 1 life in order to save their families and the beings they love at the very least (putting aside their responsibility to humanity and their godhood). Considering that we already established that if Eve had died as a baby, she would have gone straight to Heaven or the Eleysian Fields, to eventually be reincarnated - something that the Gods know and are very familiar with - from the Gods' perspective you can see exactly why killing her seemed reasonable.
Additionally, a good deal of this arc can be boiled down to: "an unseen god seeks to remake the world even if it means killing off established gods, and a newborn daughter will be instrumental to achieving this." Does that sound familiar? Because, while not being exactly the same, it still sounds suspiciously like Season 3's Hope storyline. While there was far more concrete evidence about Dahak and Hope's natures upfront, but from the outsiders' perspective, it's not hard to see why the Olympians and others were suspicious and thought the worst.
Take That, Scrappy!: "Deja Vu All Over Again" zig-zags it with Joxer. When super fan Annie learns she's the reincarnation of Joxer instead of Xena, she's devastated—calling him a comic relief idiot that never should've been introduced. By the end, though, she comes to terms with it—saying that Joxer (for all his faults) was a guy with a big heart who'd do anything to help his friends.
The Woobie: Joxer. Usually his Butt-Monkey ways are played for laughs, but episodes like "For Him The Bell Tolls" and "A Comedy Of Eros" play his misfortunes in a far more sympathetic light.