History Film / InnerSpace

* HowUnscientific: While the film's sci-fi elements mostly involve some advanced technology, Jack's premonition dream seems to imply he possesses some kind of precognitive ability, which is never explored beyond two scenes where it's used for [[RuleOfFunny little more than a gag]] and never mentioned again.

* HowUnscientific: While the film's sci-fi elements mostly don't go beyond some advanced technology, Jack's premonition dream seems to imply he possesses some kind of precognitive ability, which is never explored beyond two scenes where it's used for [[RuleOfFunny little more than a gag]] and never mentioned again.

* HowUnscientific: While the film is mostly technological sci-fi, Jack's premonition dream seems to imply he possesses some kind of precognitive ability that's never explored beyond two scenes where it's used for [[RuleOfFunny little more than a gag]] and never mentioned again.

* HowUnscientific: While the film is mostly technological sci-fi, Jack's premonition dream seems to imply he possesses some kind of precognitive ability (never explored beyond two scenes that are mostly [[RuleOfFunny played for laughs]]).

* HowUnscientific: While the film is mostly technological sci-fi, Jack's premonition dream seems to imply he possesses some kind of precognitive ability (never explored beyond two scenes that are mostly [RuleOfFunny played for laughs]]).

* HowUnscientific: While the film is mostly technological sci-fi, Jack's premonition dream seems to imply he possesses some kind of precognitive ability (never explored beyond two scenes that are primarily [[RuleOfFunny played for laughs]]).

* HotScientist: Margret Canker, a doctor who's an aggressive redhead and doesn't mind keeping the first few buttons of her lab coat unbuttoned.

* {{Fainting}}: Scrimshaw's blond {{mook|s}} [[RunningGag keeps passing out]] amidst too much excitement.

* MeaningfulEcho: Early on, Tuck hurts his toe on the cab door prompting Lydia to comment "Better your toe than your heart". Later when Tuck wants Lydia to believe he is inside Jack, her echoes that line when saying "But it was my heart that was broken, and not my toe."

* MirrorMonologue: Tuck is having one right before going onto his mission.

** The opening credits occur over weird, shifting, oddly coloured shots which suggest a bizarre, alien world, in keeping with the film's plot. Then, the camera pulls back...to reveal we've been watching ice cubes swirling around a glass of whiskey.

* HotScientist: Margret Canker, a doctor who's an aggressive redhead and doesn't mind [[AbsoluteCleavage keeping the first few buttons of her lab coat unbuttoned]].

-->'''Tuck''': We're going to drink this one to Ozzie. A good man who tried to saved my ass by injecting me into yours.

* TimeSkip: The opening fall-out scene between Jack and Lydia precedes the main plot by two month.

* ThereAreNoPolice: When Ozzie is running from Igoe in the mall, he is not looking for a security guard or yelling for help or going into a store and telling them to call 911. This would be an obvious RealLife course of action to take - however the [[Administrivia/TropesAretools trope is necessary]] to get Tuck injected into Jack.

* ExplosiveDecompression: What would happen to the minisub if the cockpit were breached, which is why Tuck can't just go to the lungs to resupply his oxygen tanks.

* EnhanceButton: Downplayed. The 35mm film camera Igoe steals from a bystander at the mall provides clear blow-up shots of Ozzie injecting Jack, his face, and his Safewway name tag.

* IllGirl: Ill Boy: Jack ''believes'' he is one of this. As it happens, he's the ultimate hypochondriac, to the point he might really give himself a heart-attack by stressing out over having a heart attack.

** Also earlier, Tuck tells Jack to runaway when the "delivery man" asks too many personal questions. He pulls out a gun when Jack tries to leave, but Jack was able to subdue him.

* NiceJobBreakingItHero: Lydia accidentally taking Jack out with her stun gun.

** Ironcially, Jack seems less disgusted about [[spoiler:his stomach acid causing him to digest Igoe. As a result, he actually ''does'' end up having a tiny human skeleton inside him!]]

* NiceJobBreakingItHero: Lydia accidentally taking Jack out with her StunGun.

* StunGuns: Lydia tries to use one on Mr. Igoe. It backfires horribly.

* ForcedPerspective: After Scrimshaw and Canker are shrunk 50%, there are a few scenes where they are seen with full-size actors. These shots were filmed using forced perspective. For the car scene, the rear of the car is actually twice as large as a normal car rear, and was about 20 feet away. During the scene half size hands and double-size heads were used. Using this method, the filmmakers didn't have to worry about compositing two separate shots in post-production, so the shots could be completed quicker. Even in the final scene with the suitcase, the case was twice as large, but the hand that closes it was real, closer to the camera in sync with the closing.

* CardCarryingVillain: Lydia's co-worker's background check on Scrimshaw establishes him as this. He's legal council to organized crime figures, administrator to four Teamster pension funds and suspected of black market arms dealing yet manages to stay clean. On the CRT of the terminal that the co-worker is reading off of, there's even more detailed biographical information. That includes his education, his formal business partnership with Dr. Canker, that he's an ex-Marine that attained the rank of Major and has multiple club and fraternity memberships. He's also rumored to have Jimmy Hoffa's wrist watch in a desk drawer as a souvenir.

-->'''Mr. Scrimshaw:''' Nuclear weapons, Jack. They mean nothing. Everybody's got em, no one's has the balls to use 'em.

* PoliticallyIncorrectVillain: Scrimshaw's line "Nuclear weapons, everyone's got em, no one's got the balls to use them".

* MohsScaleOfScienceFictionHardness: This film is fairly soft SF.

* NoodleIncident: Something must have happened between Ozzie Wexler and Dr. Canker. Her reaching down and stroking his crotch is a big clue.
** It's mentioned that the rumor is Scrimshaw keeps Jimmy Hoffa's wristwatch in his desk drawer as a souvenir.

-->''''(Canker and Scrimshaw are hiding in Lydia's luggage)''

* LockedInAFreezer: Jack is trapped in a meat truck at freezing temperature.

-->'''Jack:''' Doc, I'm cured. Wendy, not a chance. Mr. Wormwood, thank you. And I quit.

* EnhanceButton: Downplayed. The photo camera Igoe confiscates at the mall provides close-up shots of Jack's name tag in pristine resolution.