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.
There is also a tension between the interpenetration of Ash as an Idiot Hero vs someone who is Brilliant, but Lazy. Army of Darkness depicts Ash as having significant leadership and technical skills, but also has some making some pretty serious errors in judgement like forgetting the magic words. While most people assume the Idiot trope, such mistakes could be due to Ash's lazy attitude. Much of this debate hinges on the choice of ending with the original "Rami" leaning toward idiot and the Revised Ending leaning towards Brilliant, but Lazy where Ash returns to his utterly non-demanding S-Mart job despite being capable of so much more.
There was an interview with Bruce Campbell where he said that Ash had a lot of formal education (thus the textbooks and engineering supplies in his trunk), but took a job at S-Mart because it was the only place "he felt loved".
Anti-Climax Boss: The Abomination in The Remake. Really, it is not much different from other Deadites and could be killed in similar ways via chainsaw.
It's also significantly less dangerous, since it is so slow.
Ass Pull: The whole ending of The Remake after David successfully (well, in the actual movie at least) depossesses Mia.
Badass Decay: In the first two films, the Deadites require complete dismemberment to put down. In Army of Darkness, a few shotgun blasts is all it takes.
Fridge Brilliance: During the first two films, the Deadites are all safely housed in virtually intact, fleshy bodies (in the very first film, Linda and Cheryl don't even seem to actually die as humans before the demons take their bodies). In Army of Darkness, the Deadites are possessing dessicated skeletons — which are a lot easier to smash apart than juicy, wet, fleshy corpses. Not to mention that a shotgun at close range is pretty good at tearing a body into chunks in and of its own right.
Furthermore, of the fleshy Deadites we see shot in Army of Darkness, one is merely stunned and then left to be trapped in the pit of spikes, the other two in the past (the old woman in the castle and Evil Ash) are shot to stun them and dismembered, and Fridge Logic suggests that the old woman in the ending gets hacked apart too.
Broken Base: Most fans aren't too enthusiastic about the idea of a remake. Especially a remake without Bruce Campbell or even his character of Ash. Which becomes Hilarious in Hindsight when he shows up in the stinger.
Sam Raimi at least justified the lack of Bruce Campbelle as Ash, by saying they wanted to keep the story lines separate, so they can eventually merge them.
A lot of fans also aren't happy about the Decoy Protagonist trick used as an Ass Pull and the movie having a Final Girl, which for some, along with the Anticlimax Boss makes the finale look and sound like a truly bad knockoff of the original, or better, the Evil Dead 2's one.
There's also the fans divided on which of the original trilogy is the best:
The first is either seen as one of the greatest horror films or a poorly made film by today's standards, and some don't like the lack of humor (intentionally).
Evil Dead 2 is well regarded or hated for balancing comedy or horror, unlike the others which relied on one or the other.
Many either love or hate the more comedic approach of Army of Darkness.
Fridge Horror: Army of Darkness becomes a lot less funny when you realize that Sheila is a rape victim by film's end, since her transformation into a Deadite is the direct result of Bad Ash raping her, just Ash's sister in the first Evil Dead.
Speaking of which, Lucy Lawless was among those who were horrified by The Evil Dead, and, according to The Evil Dead Companion, wondered what kind of people could make such a movie. Not only would she end up working with theo, since Raimi and co. created Hercules and Xena, she'd go on to marry one of them, executive producer Rob Tapert.
In Evil Dead II, Ash mocks the hero who fell from the sky for not being able to defeat the Deadites for good. Come the ending of the film and Army of Darkness, he turns out to be the hero who fell from the sky (a fact that does not seem to escape him in the ending for II).
It is indeed the norm for the series but the remake tried to top all of the previous films.
Idiot Plot: Okay, once Mia says she wants to go home, and they refuse, they have created an adverse environment. Anyone who has been addicted or knows someone who was an addict knows that you can't force someone to come clean, and that adverse environment will hurt the addict going through withdrawl. Mia has done this before, so the friends should know this. David actually objects to Olivia's plan at the beginning, but suddenly starts trusting her.
It's not like the Evil would let them leave anyway. Besides the road is washed out, so they couldn't leave anyway.
Also, Olivia says she's giving Mia "the same care she would get in a hospital," Apparently she didn't realize hospitals clean patients up and bandage them if they're injured. Secondly, they would put the patient on an intravenous drip and give her medication besides nebulous "sedatives."
It Was His Sled: The first movie had the twist that Scott would spend the first part of the movie looking as if he would become the hero, only for Ash to step up and out live all of them. Since Ash has become a pop culture icon, it would be obvious to any first-time viewers that he would become the hero of the story.
Jerkass Woobie: Ash shows these traits in the second and third movies. He increasingly acts more like a jerk, but he's just trying to get out of this nightmare alive.
David from the remake. He abandoned his sister (and friends) years ago to take of their insane dying mother, which caused his sister to become a drug addict. He hasn't kept in touch since. However, he genuinely regrets this, loves his sister dearly (to the point he's willing to risk his life for her), and is taunted by the Deadites about being a terrible big brother and son. which leads to his Redemption Equals Death
Narm Charm: Lots. All of it intentional for Evil Dead 2 and Army of Darkness.
Nausea Fuel: The first film was one of the goriest movies at the time and the remake managed to be one of the goriest for modern audiences.
Never Live It Down: Sam Raimi notes in the first film's commentary that this is the case for Campbell's congested delivery of the line "She can't even stand up."
Special Effect Failure: For contemporary viewers with clear prints and by the standards of effects now. People found the gore quite convincing when the films were new.
By Army of Darkness, a lot of it's intentional, and that which isn't (Such as the brief bit during the recap which shows the string Ash is hanging from or the sections which you can blatantly tell are greenscreen shots) is happening at a point in the movie which is just too awesome to care about.
A few of the effects still hold up really well, though, in particular the severed hand sequence and the trees attacking the cabin.
Values Dissonance: According Bruce Campbell in the DVD commentary, a puzzling cut was made in the second movie for British showings - the part where Ash gets kicked in the head while he's unconscious. He found it odd that that was cut, as opposed to heaps of demonic blood and gore.
Watch It for the Meme: If you haven't seen them already, the only reason you're going to watch these movies is to get some context for all the memes it's spawned.
The Woobie: Everyone in the first movie has these moments at some point.
Ash goes through a lot of shit in all three movies, lets be honest.
Good lord, Mia in the remake. To start, before the events of the movie, her brother ditched her to move away, leaving her to take care of their dying mother with dementia. The mental turmoil eventually caused her to resort to heroin, which she almost OD's on before the events of the movie. During the events of the film, in which she is attempting to kick her habit, she is attacked by the trees, the evil rapes her to possess her (which sends her soul to hell to be raped, according to the demon possessing her body in the meantime), and after finally having the evil removed from her by her brother, her brother is killed and she is left to fight off the demonic creature that remains, which manages to burn her multiple times, slice through her arm and leg with a machete, and force her to tear her own hand off to escape its grasp before she finally kills it with a chainsaw. Keep in mind that this all occurs when she is suffering from heroin withdrawal.