Revealing mistake: Right after they "create" Leeloo and she is lying in the plastic cage with the little straps on her, the guy approaches her and says, "if you want out, you are going to have to work on your communication skills." She gives him a dirty look, and then you can see a huge hole, pre-cut in the glass, that she busts her hand through. (00:29:47)
Continuity mistake: When the police confront Leeloo on the side of the building, she raises her hands and we can see that they're covered in soot. She jumps off and lands in Korben's cab. When she comes to, she presses her hand against the glass, and her hand is magically clean. (00:32:35 - 00:33:20)
Korben Dallas: Finger, I was just on my way over to see you, when this big fare fell in my lap. You know, one of these really big fares that you just can't resist?
Finger: Ah. How big?
Korben Dallas: 5"9', blue eyes, long legs, great skin. You know, perfect.
Finger: Uh-hu, I see. And this perfect fare, she got a name?
Korben Dallas: Yeah. Leeloo.
Leeloo: Leeloo Dallas mul-ti-pass.
Korben Dallas: Yeah.
Korben Dallas: Yeah, multipass, she knows it's a multipass. Leeloo Dallas. This is my wife.
Korben Dallas: We're newlyweds. Just met. You know how it is. We bumped into each other, sparks happen...
Korben Dallas: Yes, she knows it's a multipass. Anyway, we're in love.
Zorg: I don't like warriors. Too narrow-minded, no subtlety. And worse, they fight for hopeless causes. Honor? Huh! Honor's killed millions of people, it hasn't saved a single one. Tell you what I do like though. A killer. A dyed-in-the-wool killer. Cold blooded, clean, methodical and thorough.