My friend, you have seen this incident based on sworn testimony. Can you prove that it didn't happen? Perhaps on your way home, you will pass someone in the dark, and you will never know it, for they will be from outer space. Many scientists believe that another world is watching us this moment. We once laughed at the horseless carriage, the aeroplane, the telephone, the electric light, vitamins, radio, and even television! And now some of us laugh at outer space. God help us... in the future.
Age Appropriate Angst: The alien leader who looks like a man in his fifties. Both the dialog and the way the actor delivers it makes him come off like a ten year old who's just had his video games taken away. The actress playing his assistant can be seen laughing in the background during one of these tantrums.
Wood had to have known this was going to happen; the actor was a famous drag queen, and a good friend of Wood's.
America Saves the Day: Toy flying saucers menacing your world? Defeat it with some California town folk and military stock footage. Said saucers only menaced one military company for all of five minutes and seemed most interested in screwing with one specific cemetery in one California town. You can't blame the rest of the world for not wanting to get involved.
Artistic License - Nuclear Physics: It says something about the film's grasp of physics that the Eros's claim that an H-bomb works by "exploding the very air itself" is probably the least serious science goof on offer.
Broken Aesop: The aliens trying to stop humanity from accidentally destroying the universe are presented as the bad guys. One has to admit that reanimating the dead into brainless ghouls is a...less effective way to accomplish this purported goal.
Keep in mind, at this point, they've become desperate, as eight previous plans failed.
Camp Gay: The alien leader, played by Bunny Breckenridge, who was in fact openly gay.
Flying Saucer: Not hubcaps-on-strings as is commonly thought; they were, in fact, toys.
Though they are plainly saucers, and referred to as such throughout the film, the pilot refers to it as "shaped like a huge cigar," which is another common description of UFOs. Mike Nelsonclarifies that it was "A saucer-shaped cigar."
And then when they land they have right angles, like a shed.
George Lucas Altered Version: When the colorized version was produced, the makers of the colorization had a contest where two separate winners got a picture of them added to a scene in the pilot's wife's bedroom, and the other winner got their name added to the headstone seen in the closeup when Inspector Clay is found dead.
Eros has it the worst, though. For one thing, he spends the entire movie trying to deviously avoid the humans noticing him, while simultaneously getting frustrated to the point of hissy-fits that the humans aren't paying attention to him. Also, his plan to destroy all of human civilization was apparently to use three zombies, possibly hoping that they would scare people to death.
Inferred Holocaust: Plan 9 is to stop humanity building a "solaranite bomb" and destroying the universe. Yet Plan 9 fails. What does this mean for the universe? Given that it's the Plan 9 Universe, total destruction may be merciful.
Informed Ability: The advanced nature of the aliens. The humans admit that they're "far ahead of us" as their spaceship screams flaming and exploding through the sky, thanks to their own stupidity.
Bill Corbett: Yeah, look at those crafty alien bastards; we could never do that!
Lost Aesop: "You know, it's an interesting thing when you consider... The Earth people, who can think, are so frightened by those who cannot: the dead."
Mondegreen: According to Kathy Wood, Ed had the Bible open when writing the screenplay, and came upon the phrase "soul of a knight", which is where "solaranite" came from. The rest of the cast keep mispronouncing it ("solernite", "solonite", etc.)
From the RiffTrax commentary: "I'mma go do Levytown."
Only under the direction of the director, which was a common theme among Tor's speaking roles in movies. In reality, he was also a businessman who eventually lost most, if not all, of his accent.
Oddly Small Organization: The entire alien fleet? Three aliens ships with, seemingly, three or four aliens inside. And the titular plan only succeeds in creating a mere three zombies.
Offscreen Crash: The explanation for the "old man" dying. Note that the old man's standing shadow is clearly visible and stationary when he's supposed to be getting hit by a car, not to mention that the trees blowing in the wind suddenly freeze.
(the scene cuts from the old man screaming to an ambulance racing by, with no sound effect indicating a car crash) Mike Nelson: Uh, did he die or did he get a job as an ambulance driver?
Please Wake Up: Tanna to Eros (who probably doesn't wake up because she's mispronouncing his name!)
Reckless Gun Usage: The cops seemed to be either retarded, suicidal or their characters are really supposed to be carrying toy guns. One cop keeps his finger on the trigger at all times, whips the gun around treating it like his pointer finger, he even scratches his head with it. Reportedly, the actor was doing this on purpose to see if Ed Wood would call him on it. Wood didn't.
Jeff fires at Eros' console when he goes over to use it, despite stating before he was going to show them the hostages with it. Jeff had no idea what might happen if he damaged ship components randomly.
Spiritual Successor: Hilariously, this film, the legendary bad fifties sci-fi movie, has almost exactly the same plot as The Day The Earth Stood Still, the quintessential sci-fi film of the era, just without the budget, script, talent, production values, etc.
Stay in the Kitchen: One of the reasons the aliens are so incompetent is that Eros is willing to shout down Tanna, despite the fact that she's been assigned to his ship. The source of the aliens' food is never revealed, so one can only really assume that she's been put there on equal terms.
Stealth Pun: If this is Plan 9, it's left for people to wonder what Plan 8 was. Say it phonetically.
Step Three: Profit: Apparently Plan 9 goes "Step one: raise three zombies, two of whom think they're vampires, in a small town. Step two: ???? Step three: Earth doesn't destroy the universe." One wonders how much they paid the Underpants Gnomes.
Stock Footage: Lots, most notably the military firing at the flying saucers.
Then there was Lugosi's footage, filmed for a couple of unrealized Wood projects and then awkwardly inserted into Plan 9 after Lugosi's death.
Title Drop: Sort of. Criswell ends his opening narration with "grave robbers from outer space," the film's original title. It was supposedly changed from "Grave Robbers" to "Plan 9" at the request of the Baptist ministers financing the film.
Too Dumb to Live: Everyone in the entire Universe, but especially Eros, who seems to think that the way to convince mankind of the extreme danger a potential scientific discovery holds is to call a group of armed humans stupid. Repeatedly.
Not to mention his plan to take revenge for humans ignoring the existence of aliens by killing the few people who do believe in them.
And then setting your own ship on fire by using critical instrumentation as a blunt-force weapon.