Layer Cake (2004)

Revealing mistake: When Gene's bodyguard (the one with the moustache) shoots Slasher and Duke, just before Slasher is shot the bullet hole effect is visible on her forehead (sightly concealed by make-up) just before the actual 'shot'.

Revealing mistake: When XXXX is in Greenwich Park with Mr. Lucky and he gets shot, Dragan shoots at the grass in front of XXXX. Grass is thrown into the air, and you can see white smoke coming from an explosive for the special effects.

Continuity mistake: When XXXX is awakened by Dragan's phone call, there is a gun lying on his pillow. In the overhead shot the gun is pointing in one direction; in subsequent shots it is pointing the other way. (00:40:45)

Trivia: In the final scene were XXXX is in the Park club dining with Trever, Morty, Gene, and Clarkey there is a shot outside the room looking in where XXXX is standing and the others are raising their glasses to him. This is similar to the final scene in 'The Godfather'. This is said during the director's commentary.

Trivia: Near the end of the film where XXXX, Morty, Trever, Gene and Clarkey are sitting around the table and they lift their glass' to him there is a 'layered cake' on the table. Cleverly placed.

The Duke: Don't you fucking talk to me like I'm some kind of mug. Don't you fucking talk to me like that.
XXXX: Duke, don't take this personally. It's business. Now, you want to know how much these pills are worth?
The Duke: Yes. Fucking. Please.
XXXX: Now just because you pay a fiver a pop down the local cattle market, don't, for fuck's sake, think these pills are worth millions. They're not. We've got to find someone to buy these pills and they've got to split them into parcels, of say 100,000. They've got to find these people. It's hard work.
The Duke: Oh, you'd give a fucking aspirin a headache pal.

[Dragan is threatening XXXX over the phone.]
XXXX: Dragan, I've got an idea. Why don't you come round for breakfast? I'll squeeze some orange juice and grind some coffee and we can talk about this like adults. How does that sound?
Dragan: Sounds very hospitable.
XXXX: Do you know where I live?
Dragan: No.
XXXX: Well fuck off, then.
[Hangs up.].

Question: Why is there a 4 in place of an 'a' on the title? It says "L4yer Cake".