Someone asked: Has anyone EVER figured out the math to that damn water-in-a-bottle-diffuse-the-bomb riddle? I actually have, in case anyone's wondering about it. If I remember right, they've got a 5, a 3, and they need 4. Fill the five, tip it into the 3, leaving 2. Empty out the three, and put the 2 in it. Then fill the five, and use that jug to fill up the remainder of the 3, which will leave 4 in the 5 gallon jug. Another possible way to do this: You fill up the 3 and tip these three gallons into the 5. Then you fill up the 3 and use this to fill up the 5. This leaves you with one in the 3 and five in the 5. Then you empty the 5 and tip the one from the 3 over, then fill up the 3. Then you've got three in the 3 and one in the 5. After you've tipped over the three this will leave you with four in the 5.

Interesting to point this out. After the FBI and Inspector Cobb are done talking to Simon about the school bomb, Cobb meets with other city officials. One of the ones he is introduced to appears to be the late Dave Thomas of Wendy's fame.

In the German version of the first 'Die Hard' movie, the terrorists were changed into radical Irish because the dubbing producers didn't want to have German terrorists (see 'Die Hard' Trivia). In the German dubbing of this movie, however, they have decided to adapt the original background after all, and the late terrorist leader is called by his original name, Hans Gruber.

When John is asked what he has done during his suspension from the police force he says "smoking cigarettes and watching Captain Kangaroo". This is a line he sings from the radio in Pulp Fiction just before he ran over Wallace. Appropriate, since Pulp Fiction falls neatly between Die Hard 2 and 3.

In the very beginning of the movie you see a big DKNY board with some people walking on a street, exactly the same scene is used in the movie Lake Placid, it's the same people at the same spot.

An interesting point about the Die Hard With A Vengeance special edition DVD. If you put the English subtitle track on, it frequently adds extra expletives to the script. For example, Zeus says, "Damn." but the subtitle says, "F**k".

When Simon detonates his first bomb in the beginning of the film, a van is shown with the logo "Atlantic Courier." In Die Hard, Hans Gruber arrives at Nakatomi Towers in a "Pacific Courier" van.

Dick Cheney makes a cameo as an NYPD police official.

In the scene where Simon is asking the St Ives question, you can see John's watch is on the inside of his wrist and upside down. Bruce Willis actually wears his watch like this and the Die Hards are some of the few films that have not asked him to change it.