The Room goofs

As he rushes up the steps, Mark remarks "Really, that's great." while his lips do not move.

When someone knocks at the door, Mark and Lisa hurry to get dressed; Lisa appears to be mouthing words, yet there is no sound. A few seconds later, when she says "Hurry up!" the line is not synchronised with her lip movements.

On the roof, immediately after Johnny says "Oh, hi, Mark", Mark answers, "Oh, hey, Johnny, what's up?" Yet the camera cuts to Mark just before he actually says "what's up", and his mouth doesn't move at all.

Addressing Lisa, Mark asks "what's going on" in reference to "the candles [and] the music", even though no candles or music are present.

Johnny claims he couldn't cash a cheque because it was "drawn out of state." Yet it is perfectly possible to cash an out-of-state cheque. As a banker, Johnny ought to know that.

Lisa requests a pizza described as "half Canadian bacon with pineapple, half artichoke with pesto, and light on the cheese." Later, the partly eaten pizza shown is merely a plain cheese pizza.

Newly lit candles sit beside the bed during the second lovemaking scene. Yet Johnny and Lisa had been drinking for several hours before they went upstairs and were meant to be so intoxicated they could scarcely stand.

In the opening love scene, Lisa removes her hair from a clip; in the following shot it's clipped back in, and in the shot after that it's loose once more.

The wine glass slips in and out of Lisa's hands.

Denny is munching an apple while Johnny and Lisa remain upstairs. He ascends the spiral staircase with the apple in one hand. In the following shot he reaches the top of the stairs without the apple.

Johnny hurls the television through the window beside the front door and it lands in the alleyway where he and his mates had been tossing a football. For that to be feasible, the front door would also need to open onto the alleyway, yet that side of the building shows no visible doors, and the characters are always shown entering from the street-facing side.

The lighter on the roof moves of its own accord.

After Denny's drug-related scuffle, Johnny and Denny swap sides whilst making their way to the door that leads onto the roof.

In the rooftop scene with Peter and Mark, the blue box on the wall continually shifts position: when both men are in the same shot the box’s front face is visible — identifiable by its yellow‑gold decoration — whereas in Mark’s close‑ups the reverse side of the box is shown.

Johnny presents Lisa with a bouquet of roses and insists that he did secure the promotion. In the subsequent scene she is shown carrying a vase which she did not possess prior to receiving the roses.

Early in his rampage, Johnny pulls the top drawer out of the chest of drawers and hurls it across the room, yet when Mark and Lisa arrive afterwards the drawer has inexplicably returned to its place.

While Johnny's on his rampage, the scatter cushions on the sofa mysteriously shift position from one shot to the next.

In the opening love scene Johnny is lying on the bed without his jacket. After Denny departs, the following shot shows Johnny wearing a suit jacket.

At the end of the rooftop shot, as Johnny sits down beside Mark, Mark is shown scratching his nose; yet in the following shot his hands are off-screen and no longer near his nose.

When Johnny greets Lisa in their opening scene, sections of the studio are visible behind the door as he shuts it.

At the café, Johnny and Mark arrange to meet "in Golden Gate Park." Golden Gate Park spans a sprawling 1,017 acres; locals in San Francisco arranging to meet there would typically choose a specific spot within the park, for example Peacock Meadow, Stow Lake, Murphy Windmill, the Conservatory of Flowers or the Japanese Tea Garden.

When Mark and Johnny are on the roof, Mark recounts a story about a "girl who was beaten so severely she ended up in a hospital on Guerrero Street". Guerrero Street does exist in San Francisco, but there is no hospital there.

At the café, Johnny, Mark and the other patrons do not settle their purchases at the till. Yet, as Johnny departs, Mark tells him, "It's on me." Presumably, customers at this establishment are expected to pay before they leave. Mark is not shown departing.

The handgun Chris-R uses to threaten Denny is clearly a BB gun, as shown by the loading hole on the top for BBs and the circular cap in the grip for a CO2 cartridge rather than a rectangular slot for a magazine.

Chris-R never discharges it, yet he successfully relies on it to intimidate Denny; he may have intentionally carried a replica weapon for that purpose, perhaps because they are easy to obtain, or to lessen his legal exposure if caught carrying it — bearing a real pistol in California without the proper licence or with a felony conviction is a serious offence.

In the closing credits a "Barista #2" is credited, despite there being no listing for a "Barista #1".

When Johnny pulls up outside the florist, one of the passers-by looks straight into the camera and gives a wave.

In the closing credits Carolyn Minnott's surname is misspelt as "Minnot", though it is spelt correctly in the opening credits.

The second love scene contains a number of recognisable shots that are clearly reused from the first.

All of the lounge furniture in Johnny and Lisa's flat has been arranged so that it obstructs the view of the television.

During Johnny's outburst, as he topples photographs from the mantelpiece, the nearest frame falls and comes to rest against the camera.

When characters descend from the roof down the staircase, they turn to the left. Yet the staircase can't lead anywhere because of the room's configuration. This becomes most apparent when Mark leaves the roof.

The television Johnny hurls out of the window lands directly below, which would be impossible given the angle of his throw.

Not a single piece of glass from the window Johnny breaks reaches the ground.

While Johnny and Denny are tossing a football about on the roof during their conversation, a single cut makes the ball seem to hang in the air for several seconds, even though they are only standing roughly four feet apart.

In the "Love is Blind" scene, Johnny is seated on either a red or a white settee, depending on the camera's angle.

The coffee-shop scene begins with two shots of coffee steaming and milk being poured. The dialogue played over these shots is identical to that spoken by the final customer who placed an order before Johnny and Mark.

The whole wall shudders when Lisa releases the door handle after pleading with Johnny to come out of the bathroom.

When Lisa rings Mark while Johnny is locked in the bathroom, she dialled eight digits instead of seven.

Johnny's compact flat could not have any large rooms adjoining it, as it has exterior windows on all four sides; yet the rooftop set is implausibly much larger than the flat set.

As Chris-R stands in the doorway leading onto the roof, the camera is placed behind his feet and then sweeps to the right. As it moves right, the wall appears to be missing its "back". The roof access shifts from having four walls to three, before reverting to four.

After Claudette says goodnight to Lisa and descends the spiral staircase, Lisa leans on the railing and the whole staircase shifts.

The second-storey spiral staircase contains several steps that must be climbed before descending the main staircase. There is no logical architectural reason for this; the most likely explanation is that the extra steps allow characters to be shown descending the main staircase without requiring an actual opening in the sound-stage floor, which would have been more complicated and costly to construct.

The first-floor balustrade of the spiral staircase abruptly terminates at the wall instead of continuing down through the floor as it would on a genuine spiral staircase.

The second sex scene has clearly been stitched together from footage of the first.

At the café, the line "I'm gonna get a slice of cheesecake and a bottle of water" is spoken twice by the same person — once off-camera and once on-camera. She is the young woman at the ordering counter, wearing a blazer and a black shirt.

It's obvious that the windows in the alleyway are made from paper, as they exhibit faint rippling.