The Stunt Man is one of my all-time favorite films. Despite its problems. Or maybe because of them !?!?
A must see.
Wizards (chill – its a cartoon)
Caltiki: The Immortal Monster
Dinosaurus!
and anything from MST3K except the westerns.
Not Manos: The Hands of Fate. I know it has the reputation as being the worst film ever made but I just found it boring.
Now The Star Wars Holiday Special, on the other hand, has well-deserved reputation as being one of the worst movies ever produced.
I would recommend Metal-Storm: The Destruction of Jared-Syn and The Dungeonmaster. The latter film being the source of the quote:
“I reject your reality and substitute my own!”.
Yeah, I thought about that. But I can’t call them Hollywood movies because Easy Rider, *Two Lane Blacktop * and *Wizards * were low budget independent productions. 
Edit: I just looked up *Wizards *and it was backed my 20th Century Fox. I thought it was an independent production because Bakshi couldn’t afford to properly do the battle scenes.
And the rest of the list…
Picnic At Hanging Rock
Cinema Paradiso
Mad Max
Bless The Beasts and Children
Manhattan
Annie Hall
Close Encounters of The Third Kind
The Sting
This Is Spinal Tap
So, Wolfman, as you watch these films (and you’ve gotten a lot of recommendations at this point), tell us which ones you like so we can recommend others.
I’d forgotten about these two, if your “bag” is comedy horror like Evil Dead II/Army of Darkness/Cabin in the woods, The first two House movies are great versions of it. I… think there was a third, but it might not be good.
And since the name, how about the House Party movies, with Kid and Play. Which were fun movies I’d long since forgot, but I watched about the same time. Similarly I remember the first two being good to decent, and third being horrible. It appears there was fourth in 2001, maybe even a fifth, maybe not involving Kid and Play.
I suspect one of the ultimate classic cult movies of the 80s really has dated a lot…
The Wizard of Speed and Time with Mike Jittlov. Pre CGI effects applied to a tale of making effects movies in Hollywood…
The third movie (titled House III overseas, titled Horror Show in the US) was straight horror, with no comedy. House IV was back to horror/comedy, and is the first that is actually a sequel to any of the predecessors. I haven’t seen either of them, so cannot comment on quality. Word-of-mouth was not kind to them.
A few more from the ‘80s. I don’t know how culty they are but anyway -
Choose Me from 1984 with Keith Carridine, Genevieve Bujold, Leslie Ann Warren, and Rae Dawn Chong
And Barfly with Mickey Rourke and Faye Dunaway
Birdywith Matthew Modine and Nicholas Cage
Speaking of Nicholas Cage, Valley Girl - a sweet bad boy - good girl romance
Liquid Sky - lesbians and drug-addicted aliens, what could go wrong?
Diva might be too slick for ‘cult classic’ but worth a mention IMO
Hmm – we share a wavelength.
Wizards is alternately amazing and terrible. It’s Ralph Bakshi’s trial run for his awful Lord of the Rings movie, with some great animation, some innovative re-use of solarized old cinema as a background for new animation, some incredibly tasteless Nazi imagery and religious satire, a Wizard voiced by a guy imitating Peter Falk, the incredibly sexy Princess Elinor, still image flashbacks by Mike Ploog, and a lot of non-sequiturs, including the ending. The first poster featured the robot, Necron-99, atop one of the two-footed “horses” with a skull on the back of the saddle. A couple of months later they used the same image, but replaced the skul with “Peace”, and tried to sell this post-apocalyptic movie with the tag line “An Epic Fantasy of Peace and Magic”, which it very clearly was not. At least the “Peace” part. A confused mishmash that would’ve been great if they ever straightened out exactly what they were trying to do.
Calltiki – The Immortal Monster was an Italian monster movie dubbed into English that looked like a Mexican movie dubbed into English. Like many movies from this time (The Blob, X-the Unknown, The H-man, The Angry Red Planet) the creaturte was a shapeless, all corroding all-consuming blob. In this case the blob was a thing living at the bottom of a Mayan well, a la Chichen Itza, and eating the sacrifice tossed in. It’s been dormant until a bunch of archaeologists come along. It promptly eats most of one diver, then surfaces to eat the other snacks by way of archaeologists. They managed to immolate most of it, but a piece remains, attached to the arm of one guy who stumbles into it, trying to retrieve a sack of goodies. They remove it and store the piece, but it’s eaten his arm to the bone. It turns out that the creature is re-energized by radiation from a comet which, wouldn’t you know it, just happens to arrive. The little piece of the thing grows to immense size, so they attack it with very bad model tanks with flamethrowers and immolate the new thing.
I’d love to own a copy, but the DVDs of it sell for a premium price, and I’m not willing to pay that.
Dinosaurus! – I saw thisd one as a kid in a drive-in movie during a thunderstorm, a unique experience. It had a stop-motion T. Rex and a stop-motion brontosaurus. They had been “frozen” somehow at the bottom of the Carribean near an island (this didn’t make any sense to me as a kid, either) until they were dredged up, along with a preserved caveman, by a mining company. They get revived by a bolt of lightning, and go around the island. A kid befriends the brotosaurus and the caveman, and the two go riding around the bronto’s back. I didn’t notice until I got a VHS tape of this movie that many of the scenes of the T. rex arren’t really animated – they used a puppet to save time and money. Animation was by Wah Cheng and a lot of the Projects Unloimited team that did work on The Outer Limits.
I had the comic book adaptation. I’m convinced that the climactic showdown between the hero, using a steamshovel to fight the T. Rex, inspired James Cameron’s Aliens, with Sigourney Weaver fighting the Alien Queen with her exoskeleton loader suit.
Sorry my links were all f***ed. Here we go again:
Choose Me from 1984 with Keith Carridine, Genevieve Bujold, Leslie Ann Warren, and Rae Dawn Chong
And Barfly with Mickey Rourke and Faye Dunaway
Birdy with Matthew Modine and Nicholas Cage
Speaking of Nicholas Cage, Valley Girl- a sweet bad boy - good girl romance
Liquid Sky - lesbians and drug-addicted aliens, what could go wrong?
Diva might be too slick for ‘cult classic’ but worth a mention IMO
I’d nominate “Prelude to a Kiss” as one of the most mainstream like Cult movies I’ve seen. I’m not sure many have heard about it, considering it is a romantic comedy starring Meg Ryan and Alec Baldwin in the early 90s.
Normal dude and quirky girl fall in love. On their wedding day, she kisses and old man and body swaps with the old man. Normal dude eventually works out that his brides body is there but the mind has gone, and tracks the old man, which is hard given that he has in effect lost control of his life with dementia.
While on the common theme of living someone else’s life in body swap movies, the romantic side of it makes it a tad different.
Serial - 1980 film with Martin Mull
Dragonslayer - 1981 film
Far Out Man - Better than The Corsican Brothers, this movie features Tommy Chong and Cheech Marin but not as Cheech & Chong. It also has a stellar cast and while it isn’t a great movie by any means, it does have quite a few excellent moments and quotable lines:the scene with Martin Mull and the guitars is priceless, “he took all my money and my drugs” as she loots a watch from his corpse, “Smoke fish!”, etc. 
Bunraku - I mention this film in these threads all the time; not sure anyone has ever watched it, tho. Prolly not exactly a cult film as it’s fairly recent and still fairly unknown.
This is a classic orphan’s revenge tale at it’s heart. But it’s told in a weird narrative and visual style. The narrative style is Japanese story trappings but with a decidedly Russian-style antagonist and an American-style protagonist (altho there’s no Cold War dynamic at play; this movie as made in 2011). The visual style is this bizarre, flat 2D cartoon-movie-set-with-washed-out-improperly-skewed-technicolor thing that is both minimalist and striking at the same time. The acting is ham-fisted scenery-chewing go-for-broke-theatre style and yet it all works. It’s the closest I’ve come to seeing a comic book on a movie screen since Sin City.
My last for this post isn’t a movie but it is worthy and should be considered a cult classic, IMO. This is a short video series (6 parts, 32:43 long) called Don’t Hug Me I’m Scared. Best short description I can give is that it’s a surreal comedy horror concept dressed up in children’s TV show trappings. Super bizarre. Totally unforgettable.
Be sure to get a copy with all of the endings.
If you want shallow, rather than deep, try Flash Gordon (1980). Soundtrack by Queen.
Das Boot
Das Boot
Das Boot
…mentioned many times. But! The OP specifically requested material that wasn’t “too deep.”
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Thank you, I’ll be here all night.
Drop Dead Gorgeous
Man Bites Dog
I loved Flash Gordon as a kid for the fun action. Nobody took this movie seriously, except maybe Queen, who wrote some awesome music just for the movie.
You could see Highlander, which you probably already saw. It hasn’t aged that well, I find upon a recent viewing. The best part in the movie was when the (again, dedicated) music by Queen was playing.