Revealing mistake: When the space ship leaves the Earth's atmosphere about to make the jump to Phloston Paradise, you can see the box around the spaceship used as part of the effects process.
Continuity mistake: The pre-cut piece of glass that Leeloo breaks through when she escapes is a different shape after it is broken.
Character mistake: When the police scan Leeloo the first time, the computer reads "Commencin" instead of "Commencing."
Continuity mistake: When David is waiting for the priest and Leeloo before attempting to board the shuttle to Phloston Paradise, he is chewing on the nail of his index finger. The shot changes to show a different angle of him and he is now chewing on his thumbnail with no time for him to have changed position.
Revealing mistake: When the doors of the temple close on the Mondoshawan, it shakes like styrofoam.
Continuity mistake: When Billy trips on his equipment bag, he fires the gun in an arc that goes up and slightly left. The sparks on the alien go from the center up and to the right.
Character mistake: Right before the door of the tomb closes and traps one of the Mondoshawans inside at the beginning of the film, the Priest says "hurry, you still have time". But there is not enough room left for the Mondoshawan to squeeze through.
Continuity mistake: When Dallas hangs the coffee pot to brew, it's hung at an angle of about 20°. A few seconds later, it's righted itself to a level position and the handle changes to silver lined.
Continuity mistake: When Leeloo is drying her shirt after being in the autowash, she is seen starting to put on the shirt and when the camera angle changes the shirt is on.
Revealing mistake: Whilst Diva Plavalaguna is singing, you can see the back of her head creasing and bending. This is because the suit that the actress is wearing is made out of foam latex; confirmed by Nick Dudman, Creature Design Supervisor on the DVD featurette "An Audience With Diva Plavalaguna".
Revealing mistake: After Korban meets Ruby and everyone leaves them alone, Korban grabs Ruby by the neck and holds him to where his feet can't even reach the ground. In the first shot, you can tell that Korban's hand isn't even applying pressure. In the next few shots of Ruby, still being held off the ground, you can now see that Korban's applying a little pressure now, but probably not as much as there should be while holding a full grown man a foot off the ground.
Deliberate mistake: In the very first shot of Korben Dallas, his bedside clock is facing away from him, towards us. We can read it, but he shouldn't be able to because he'd be looking at it backwards.
Continuity mistake: When the Diva is shot and she begins to fall, her arms are outstretched with her palms facing up. The shot changes to behind her and she continues her fall, her palms now face down.
Visible crew/equipment: When Korben pulls into the garage after leaving Leeloo with Vito, he says to himself, "I shouldn't have kissed her." When he does, a boom microphone is visible above his head along the roof of the cab.
Continuity mistake: Leeloo's face is dirty outside the building, but in the priest's apartment she's scrubbed clean.
Other mistake: Leeloo jumps from the ledge and falls straight through the roof of Korben's cab like it was made of paper. But a few seconds later, the police open fire on the cab and the bullets don't penetrate.
Audio problem: During any scene where weapons are being fired, the audio has the sound of cartridge casings falling onto a hard surface, but none of the weapons are ejecting cartridge casings to fall.
Answer: Jill Mullan.
Donald Jenkins