These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Again when Agrabah was reintroduced in Kingdom Hearts II. When Sora, Donald, and Goofy arrive, Iago finds them, and warns them of a Heartless ambush. In exchange, he asks for Sora to put in a good word for him to Jasmine and Aladdin. Iago then guiltily tells Sora and Aladdin where Jafar's lamp is, in the Cave of Wonders, only to discover that the Peddler got it first. Pete then steals it from him, and Sora gets it back. During the second visit, Iago lures Sora and Aladdin to the ruins, while Jafar takes over Agrabah.
Iago is also useful in a "World Runner" deck in the short lived Kingdom Hearts card game. He appeared in the fourth and final American set, as a level 0 (Meaning he can be played if you have no other friend cards in the friend area.) If you discard him, you can remove a Heartless card from your current Agrabah world card. Which is helpful, because two of the three Agrabah cards have no dark limit, meaning your opponent can play as many Dark or Nobody cards as they wish on your world, and some of them have little means of being extinguished.
Fridge Logic: When Aladdin makes his climactic choice between using his third wish to be with Jasmine or free the Genie, Jasmine and the Sultan are standing right there. He could easily have wished to be a prince again, and then simply handed the lamp off to either one of them, who'd have three more wishes coming. Of course, this wouldn't have been half as heroic or satisfying.
Also hilarious right away considering Jafar's living conditions at the end of the movie.
Aladdin and Jasmine's world tour in "A Whole New World" includes visits to Greece and China (the latter even with fireworks); in the former case, given the subsequent cartoon crossover, that would suggest Hercules himself was around at the time.
Yep, Hercules was around at the time, albeit he was still a teen in training! There's actually a canon crossover episode in the Hercules television series. It's set directly after the Return of Jafar film - Jafar ends up in Hades' underworld, and finally meets his official-official end in the when his soul gets cast into the river Styx.
The first lyrics in "Friend Like Me" include a reference to the Forty Thieves. Flash forward to the third movie and learn that Aladdin's father is their leader (and would've been during the first movie's events).
In one scene of the first movie, Jafar deceives Jasmine into believing that Aladdin has been executed "by beheading" (while Al is actually alive and imprisoned). In the first sequel, Al is condemned to death by decapitation, and nearly beheaded by Public Execution when Genie arrives in time to save him in a Big Damn Heroes moment. In the TV series's episode, Al finally gets his head "cut off" by Caliph Kapok... or rather separated, since the rest of Al's body is still alive while his friends find a way to reunite it with his head. Weird.
Moral Event Horizon: Jafar trying to kill Aladdin after getting the lamp from him.
Narm: "Are You In Or Out" in King of Thieves is supposed to show the remnants of the Forty Thieves planning to return to their bloodthirsty rampaging roots after Cassim reformed them into Noble Demons. But it's hard to take some of them seriously since several of them are still humorous in design, and the lyrics include "I'm the prince of generosity" and "Imagine the fear on their faces / when we drop by for cookies and tea."
Smurfette Breakout: Jasmine is a supporting character while the story is about Aladdin, but she is included in the Disney Princess franchise and is actually the only princess in the lineup who isn't the main character in her film.
Squick: Jafar isn't particularly attractive on his own, but any scene where he puts advances on Jasmine makes him look even slimier, causing major squick! Even in the movie's own universe, Abu and Iago have a Squick noise at Jasmine and Jafar's kiss. Jasmine looks pretty grossed out as well during that.
Tear Jerker: Genie's goodbye to Aladdin made some fathers in the audience cry.
Genie: No matter what anybody says you'll always be a prince to me.
When Jasmine thinks that Aladdin has been executed, and she realizes: "I didn't even know his name!"
Jafar looks more like a "true" Arab than Aladdin and Jasmine, who are simply "exotic"-looking. More than a few background characters also resemble Middle Eastern stereotypes or caricatures.
Some "Arabic writing" that we see is actually random squiggles instead of real words. (The later Mulan uses actual Chinese characters.)
The song "Prince Ali" mentions that the prince (Aladdin in disguise) has slaves, who are proud to work for him. Though this may be keeping in tone with the original.
Sequels
Badass Decay: Genie. It seems to come with being free, as he admits in Return of Jafar, where he struggles several times to get his powers to work right.
Magnificent Bastard: Jafar, while more of a Smug Snake in the first movie, became a lot more competent in the sequel, developing a more thought-out plan to take over Agrabah. If it wasn't for Iago pulling a Heel Face Turn and betraying him, he would had succeeded.
Sequelitis: Mostly averted as the sequels manage to avoid the worst of it. They're commonly regarded as easily the best of the direct-to-home video sequels Disney has offered.
Counterpart Comparison: Unsurprisingly, Mozenrath tends to be compared to Jafar quite a bit. He avoids being a Replacement Scrappy though, which is quite a feat in itself, because... well, it's Jafar.
Fun fact; both of their voice actors were named Jonathan.
Crazy Awesome: Genie, on occasion. Sometimes he saves the day just by goofing off, not even realizing it.
His girlfriend Eden follows this trend quite nicely.
Ensemble Darkhorse: Mozenrath. While only appearing in 9 out of all the 86 episodes, there was just enough depth to his character to make him stand out from the crowd, resulting in endless theories about him and his past life.
Evil Is Cool: Many villains are seen this way, like Arbutus, Chaos, Malcho, The Mukhtar and Mozenrath. Of course, on the other hand...
Evil Is Sexy: Mozenrath, Mirage, Saleen and Sadira (though she's more cute than sexy, and more of a Friendly Enemy than evil). Also, Jasmine during her temporaryevil in "Forget Me Lots".
Foe Yay: Aladdin and Mozenrath have quite the fan following with numerous fanfics and fanart of them.
Whenever Mozenrath appears, Aladdin usually ends up in some kind of bondage. They also tend to end up wrestling on the ground.
Mozenrath has this with Jasmine too from time to time, with the way he's constantly teasing her and calling her cute, or gently touching her chin when she's captured. She also has a very impish smile on her face when she uses her whip on him.
Hilarious in Hindsight: In "Genie Hunt," once Genie finds out that Mukhtar is coming for him, he panics and suggests making Iago a genie in his stead and dunks the parrot in blue paint in an attempt to disguise him. In "Power to the Parrot," he actually does turn Iago into a genie.
One-Scene Wonder: Destane became quite memorable, considering he only had a few seconds of screen-time, as well as no lines.
They Wasted A Perfectly Good Character: Chaos who's possibly the most powerful being in the Aladdin universe, and can give Mirage a run for her money, only appeared in one episode.
Ugly Cute: Xerxes◊ is usually just plain ugly, but can sometimes cross into this when it's shown how devoted he is to his master.
Also the Unkbut, the giant bugs that live under Agrabah.
The Woobie: All of the main characters gets their moments, or even entire episodes, of this. ...Yes, even Carpet.