* ActingForTwo: Originally, Chris-R was going to be played by Scott Holmes, who already plays Mike, wearing [[ClarkKenting a hat and glasses]], which would have made the film even ''harder'' to follow. Fortunately (unfortunately?), Holmes convinced Wiseau to give the role to [[RealLifeRelative his roommate]], Dan Janjigian, whose performance so impressed Wiseau that he thought about writing more scenes for Chris-R, but never did.
* BeamMeUpScotty: The "oh hai, X" construct is used more than enough times in the film, but in the flower shop scene Johnny just says "hai doggie" without the "oh".
* TheDanza: ''Subverted'' if that's even possible to do with this trope with Mike Holmes as Mike. Believe it or not: according to ''The Disaster Artist'', the actor's name is actually ''Scott'' Holmes and Wiseau credited him as "Mike Holmes" because ''he had forgotten Holmes' real name''.
** Inverted. Lisa has been together with Johnny for seven years, yet was played by a 22-year-old actress. Though her character was probably meant to be older, the contrast of the actress's age with Johnny's Tommy Wiseau being in his late 40s made this all the more noticeable.
** Played straight with Philip Haldiman, who was one of the oldest members of the cast and played the youngest character, Denny.
* DeletedScene: The film has only two scenes that ended up on the cutting room floor: [[https://www.youtube.com/watch?v=YQergvEGwdc the original version of the Chris-R scene]] and Johnny committing suicide in the living room instead of the bedroom. Tommy Wiseau insisted on keeping everything in the film, so aside from these two scenes (and everything filmed on the HD camera), everything that was filmed ended up on screen.
* DeliberateFlawRetcon: In addition to using the ParodyRetcon excuse liberally in defending the film, Wiseau also claimed that Denny's strange, abnormal behaviour was deliberately written in order to indicate that Denny was mentally ill (even though none of the characters in the film seem to find his behaviour particularly out of the ordinary).
* DoingItForTheArt: Tommy Wiseau. The man spent years raising six million dollars to write, produce, direct and advertise his dream project with absolutely no studio support. The amount of time and effort he poured into making it a reality is nothing short of astonishing - perhaps even inspiring.
* DyeHard: Juliette Danielle, if you couldn't tell from her roots and eyebrows.
** That Chris R's actor puts on a better show than the rest of the cast during the 'gimme my fucking money' scene with Denny is apparently largely down to the fact that Wiseau ''genuinely'' pissed the actor off between takes.
** Greg Sestero's venomous delivery of "Keep your stupid comments in your pocket" is due to him channeling all the frustrations of the shoot, and imagining he was actually saying to Wiseau "Why are you doing this to me?"
** Greg Sestero (Mark) is referred to as "Sestosterone".
** Mike is the "Me Underwears" guy. But only because that's more succinct than "Hilarious Blowjob Face" guy.
* ItWillNeverCatchOn: With a script so nonsensical that the only way to properly salvage it was a complete rewrite and a director who had zero experience in how to make a film, every cast and crew member believed the film would never be seen by any audience, much less get completed.
** Judging by her twitter (and corroborated by ''Literature/TheDisasterArtist''), the actress who plays Lisa, Juliette Danielle, is actually very sweet, unlike her bitchy character Lisa. Not to mention she has a great sense of humor about her part in the movie, and has stated that she LOVED WebVideo/TheNostalgiaCritic's review of it.
** Most of the cast are this as well, especially Greg Sestero (who appeared on the WebVideo/TheNostalgiaCritic reprising his role as Mark). The exception, surprisingly and ironically enough, is Tommy himself, as how he reacts to you depends on ''when'' you encounter him.
* MethodActing: Chris R's also stayed in character during his entire time on set, resulting in the other actors being genuinely scared of him.
* MoneyDearBoy: Sestero considered leaving the set due how difficult it was... but didn't for this reason.
* OneBookAuthor: To date, this is Tommy Wiseau's only feature film, and none of his online projects have gained as much notoriety or cult following.
** WebVideo/TheNostalgiaCritic not only reviewed the film, but he has a character based on Wiseau.
** When ''WebVideo/TheSpoonyExperiment'' and ''WebVideo/AtopTheFourthWall'' reviewed ''Warrior #2'' and ''#3'', there was a shot of an alternate dimension where everyone acted like Wiseau, and quotes from this movie abounded.
** In ''Webcomic/KnightsOfBuenaVista'', Adriana asks if it's safe for her PlayerCharacter "to walk out of the room", and Mary immediately quotes this movie (just changing "Lisa" to "Elsa").
* TheyJustDidntCare: [[invoked]] As production dragged on, professionalism just fell apart. Most of the crew were convinced the film would never be seen by anyone. Greg Sestero admitted to phoning in his performance. Entire scenes were out of focus because they did not bother to check the lens.
** According to a crew member, the infamous "Hai doggie" scene was one of these. The owner of the flower shop they were filming the scene in just happened to have the dog there and it hadn't moved at all during the filming so Tommy Wiseau improvised a brief moment where he rubs the dog simply because the thing was creeping him out.
** Sestero ad-libbed the part about the hospital with the beaten up woman being on Guerrero Street (despite being aware that there is no hospital there) because it's where Wiseau's San Francisco apartment is located. Even though no one who saw the movie would ever make the connection, Wiseau was furious at Sestero for this...and used the take anyway because it was the best one they had.
** Wiseau insisted on the entire cast being present during the filming of every scene, in case he suddenly felt like throwing them into the background.
* TroubledProduction: As detailed by ''Literature/TheDisasterArtist''. Yes, Tommy Wiseau really ''is'' that clueless, and yes, the movie really was as horrific to make as you would expect with him in charge.
** According to ''Literature/TheDisasterArtist'', Wiseau was considering a subplot about Johnny being a vampire with a flying car. It never comes through in the film, but Wiseau is [[AuthorAppeal utterly fascinated]] with vampires.
** There's an [[http://www.youtube.com/watch?v=iS4QJImQnfo early version]] of the film's main theme, which according to Milicevic was rejected by Wiseau for being too depressing. The former interpreted the film as a tragedy.
** According to Greg Sestero, the film began life as a play. It would've been a [[BottleEpisode Bottle Film]], with the whole story being set in a single room. That's what the film's title is supposed to refer to; Wiseau was just too lazy to change the title when he decided to make it a movie.
** Lisa was apparently originally named Blondie.
* WordOfGod: According to Mr. Wiseau, Lisa's mother makes a full recovery from her breast cancer. He's also helpfully clarified that yes, Denny ''does'' have some sort of mental disorder, a detail that makes a lot of his scenes make more sense.
* WritingByTheSeatOfYourPants: According to the book TheDisasterArtist, everything that fans love about The Room was ab libbed. Wiseau was writing, directing, casting, rewriting, and acting by the seat of his pants, practically making up the film as he went.