A group of folks, most likely teenagers or college students--most most likely adults in their late twenties posing as teenagers or college students--decide to get together for a party and/or weekend vacation at a remote cabin/mansion/decrepit building of whatever description. After a usually excrutiating period in which the loutishness and general fucked-upness of their personalities is established, these young funseekers stumble upon an old book/pile of papers/recording/something which can lead to the reading of an ancient incantation. As a lark these kids read the incantation aloud, only to discover the horrible folly of such an action. One by one they die, until only one or two of them are left and the terror has finally stopped. For the moment....
This, my friends, is Spam in a Cabin.
The origin of the term is, quite suitably, attributed to Sam Raimi, who made two of the most memorable examples of the genre withThe Evil Dead and its sequel, Evil Dead II: Dead By Dawn. The spam referring to the characters who serve as the meat required to be pushed through the movie's grinder and the cabin being the single, preferably inexpensive, location where said grinding can occur.
While the above description details what is considered to be the truest form of the genre, one has to be open about these things and accept that variations in the formula must be allowed, lest the critic appear to be too inflexible in his/her evaluations. Thus sometimes demons can be zombies, monsters or aliens, cabins can be spaceships or shopping malls and teenagers/college students can be an assorted crew of mismatched strangers. That said, here are some signs to look for to be sure that what you are watching is the real deal:

2) Most of the characters are assholes who deserve to die
3) The victims bear at least some small measure of responsibility for their own deaths
4) The punishment is far, far, far worse than the crime
5) The evil may be temporarily vanquished, but it will inevitably rise again (probably in the sequel)
6) Linnea Quigley is in it
7) Ditto Bruce Campbell
8) No matter the location, there will be senseless nudity, most likely in a scene where a dude imagines a demon is a hot naked centerfold
9) The movie's tone is unusually nihilistic
Of these nine signs, the first is the most important and crucial. The other eight aren't absolutely necessary, but if you spot more than two of them along with the first, chances are you're enjoying a canned processed meat product.
Here then are some memorable examples of what I'm talkin' 'bout

Obvious Signs of Spam in a Cabin-dom: (All 3 films) 1, 2, 4, 5 and 9
Most Memorable Moment of Spam-Grinding: NotLD -- Little girl takes a garden tool to her mommy; DotD (Orig) -- *Shrug*; DotD (RM) -- The sad fate of a loving family man.
Most Senseless Spam Nudity: (All 3 Films) N/A
Alien (1979)
Spam on a spaceship is still spam in an inescapable location, so Ridley Scott's 1979 classic definitely counts as one of the classiest examples of the genre. Of the various sequels, I would argue that Aliens isn't spam, but that Alien3 and Alien Resurrection belong straight in the can.
Obvious Signs of Spam in a Cabin-dom: 1, 2, 3, 4, 5, 8, 9
Most Memorable Moment of Spam-Grinding: "Excuse me Mr. Hurt, but we're ready for you now."
Most Senseless Spam Nudity: Has there ever been a moment more inexplicably unneccessary than the one where Ripley strips down to her undies while attempting to escape from the self-destructing spaceship?

Obvious Signs of Spam in a Cabin-dom: The Evil Dead -- 1, 3, 4, 5, 7, 9; Evil Dead II -- 1, 2, 3, 4, 5, 7, 9
Most Memorable Moment of Spam-Grinding: ED -- Pencil in the ankle; ED II -- Celler door blood fountain
Most Senseless Spam Nudity: The ED films are pretty light on the senseless nudity (which is their only real fault), but they both make up for it with wonderfully tasteless sequences in which screaming young women are violated by the forest outside the cabin.
Chopping Mall (1986)
Combining the best most obviously exploitable elements of Dawn of the Dead (1978) and Short Circuit (1986), Jim Wynorski's Chopping Mall tells the not-so-riverting tale of a group of idiots who find themselves trapped inside of a mall and hunted by a group of malfunctioning security robots. Everyone sing along with me: Lovely spam! Wonderful spam! Lovely spam! Wonderful spam! Spam, spam, spam, spam!
Obvious Signs of Spam in a Cabin-dom: 1, 2, 3, 4, 8
Most Memorable Moment of Spam-Grinding:

Most Senseless Spam Nudity: Didn't I mention that this is a Jim Wynorski movie? In other words, there are far too many to count.

Obvious Signs of Spam in a Cabin-dom: ANoES 3 -- 1, 4, 5, 8; Bad Dreams -- 1, 2, 3, 4
Most Memorable Moment of Spam-Grinding: ANoES 3 -- "Welcome to Prime Time, bitch!"; Bad Dreams -- Though it happens tastefully offscreen (BOOOOOO!!!!! HISSSSSS!!!!!!!!), I'd have to say when the horny middle-aged couple gets taken out by the industrial fan, with the result that our lovely young heroine recieves an unwanted shower of blood.
Most Senseless Spam Nudity: ANoES 3 -- Freddy Kreuger pretending to be a hot blond nurse who seduces a mute young horndog? Sure sounds like senseless spam nudity to me!; Bad Dreams -- Nada, which probably explains why no one seems to like it.
Night of the Demons (1988) and Sorority Babes in the Slimeball Bowl-O-Rama (1988)

Obvious Signs of Spam in a Cabin-dom: NotD -- 1, 2, 3, 4, 5, 6, 8, 9; SBitSB -- 1, 2, 3, 4, 5, 6, 8
Most Memorable Moment of Spam-Grinding: NotD -- Dude learns never to french a demon; SBitSB -- Same dude's head proves to be a poor excuse for a bowling ball.
Most Senseless Spam Nudity: NotD -- Demon Linnea decides it would be fun to insert a tube of lipstick into her breast (an effect made possible due to the fact that her fake fake breasts look just as genuine as her real fake breasts); SBitSB -- If Michelle Bauer (pictured to the right) is in a movie, senseless nudity is pretty much a given, which is why it doesn't come as any surprise that she spends more of this movie naked than she does with any clothes on.
Evil Toons (1992)
Don't make me repeat myself.
Obvious Signs of Spam in a Cabin-dom: 1, 2, 3, 4, 5, 8
Most Memorable Moment of Spam-Grinding: Killed Bill hangs himself.
Most Senseless Spam Nudity: Take your pick:


Obvious Signs of Spam in a Cabin-dom: 1, 3, 4, 5, 8
Most Memorable Moment of Spam-Grinding: Billy punches a hole through the sherrif's head.
Most Senseless Spam Nudity: Uncle Willy's last hurrah (pictured).
Feast (2005)
When I got to part in my continuing Cuttin' Down the Pine posts where it became appropriate to say bad things about my first editor, I admit I did feel some apprehension. How could I justify writing something so obviously nasty about someone I hadn't seen or talked to in years? To help me answer this question I googled his (real) name and found a review he wrote for John Gulager's Project Greenlight movie Feast, which he deigned to give only half of a star, writing:
How can 15 minutes of fame last more than 90? This splatter flick won the third installment of Matt Damon & Ben Affleck’s Project Greenlight. With any luck, its brief theatrical run will signal the demise of the concept. A dozen patrons, mostly strangers, barricade themselves in a Southwestern dive bar to prevent half-alien, half-Satanic goat-like creatures from bursting in and feasting on them. Showing their deep understanding of “the genre,” the screenwriters introduce the players with freeze-frame caricatures that provide a catchy handle (Heroine, Bartender), an occupation (“Poor Man’s Tony Robbins”), and a life expectancy (Regular or Extra Crispy?). Such self-reflexivity is only occasionally funny. Mediocre performances, long lags between eviscerations, and misleading clues worsen the pain. All in all, a career-scuttling debut for director John Gulager, who we’re told “has been immersed in the filmic arts since birth.1
Needless to say I had no problem ripping him a new asshole after I read this, if only for his typically prickish use of quotation marks around the words "the genre", which I can totally hear him say in a way that makes me want to punch him. For my money, Feast is easily one of the most entertaining and playful horror movies in the past decade, one that both honors the cliches of "the genre" (seriously wtf is that supposed to even mean? That the horror genre is a figment of our imagination?) while completely turning them on their head. The performances are excellent, especially Krista Allen as the single mother survivor who loses the most and goes all Ripley at the end. Watching the movie I wondered why it failed to make an impact when it was released and my guess is that most of its pleasures are too coded for normal audiences (or "pretentious idiots") to appreciate--the majority of its thrills being most evident only to people who have these films flowing in their blood.
Obvious Signs of Spam in a Cabin-dom: 1, 5, 9
Most Memorable Moment of Spam-Grinding: The untimely death of little Cody.
Most Senseless Spam Nudity: N/A, although the film does contain the only scene in a mainstream film to feature a tied-up, one-legged biker chick spitting out baby monster semen after being mouth-raped by the nasty little critter.
I wonder how many Google hits that last sentence is going to get me.
Snakes on a Plane (2006)
I'm getting tired, so I'll let you come up with your own joke involving spam, Samuel L. Jackson and the word motherfucker.
Done? Okay.
Obvious Signs of Spam in a Cabin-dom: 1, 2, 8
Most Memorable Moment of Spam-Grinding: Good riddance to small yappy dogs.
Most Senseless Spam Nudity: The nipple snakebite scene is the very definition of senseless spam nudity.
So that'll probably it for the Sunday (okay, Monday morning) DVD indexes for awhile. A few may pop up between now and October, but I'm sure they will comes as much as a shock to me as they will to you.
1 From the online version of The Phoenix, a Boston-based alternative weekly. I would have included the link, but doing so would give away the true identity of "Kip Wrangler". Google it, if you must.