This concept was not stolen from any number of other websites. Oh dear me no.

A (Hopefully Not Too Spoilerrific) List Of Things I Learnt By Watching Die Hard 4.0

Including A Few Things That I'd Already Learnt By Watching Independence Day, But It's Always Good To Have Them Confirmed

• Putting ".0" on the end of your movie title indicates that it is about something magical called the internet. It does a wonderful job of distracting the audience from the fact that the phrase "die hard" has never really borne that much resemblance to any of the movies in the entire series thus far.
  
• Hackers are universally skinny nerdish types with no social skills/hygiene whatsoever. They are also universally male.
  
• Petite Asian women are automatically experts in martial arts.
  
• It is possible to put a handgun round the edge of a wall, shoot without looking and kill your adversary ten yards away with a single shot. For reference, this feat is approximately equivalent to scoring 180 in darts while blindfolded and facing the wrong way.
  
• Washington DC drivers, in the midst of a major public emergency, are quite happy to drive at 60mph into a tunnel, despite being able to see traffic coming the other way in the same lane, and will neither slow down nor switch on their headlights should the tunnel lights suddenly fail.
  
• The previously mentioned hackers are very easy to assassinate by sending them a bit of computer kit with a large amount of C4 plastic explosive inside, then uploading a virus to their systems which causes said C4 to explode. The hackers will not look inside this bit of kit (and will therefore not notice the C4, helpfully labelled "C4"), nor will they, despite being the kind of people who routinely break into other people's systems, have secured their own systems against viruses.
  
• The people who are performing this assassination will not consider that maybe sending someone round with a gun might be a rather easier and quieter way of doing it, despite the fact that they have in fact sent many people round with guns as a "Plan B".
  
• Despite having just blown up the hacker's computer, the assassins will then go and collect the computer's hard drive, which apparently still has readable data on it. The fact that hard drives frequently fail under almost perfect conditions, making it very difficult to get any usable data off them even if they haven't exploded, will not occur to the assassins.
  
• All hackers, along with the FBI Cyberterrorism Unit and any group of bad guys using computers, use impossibly complicated graphical user interfaces, with windows sliding in all over the place and graphical representations of things that really don't need them.
  
• Surprisingly, even though the said interfaces are so prevalent, no hacker, FBI agent or bad guy will ever, ever, use anything other than the keyboard to control his or her computer.
  
• All major US governmental organisations, including places like the NSA and CIA, have all of their databases available on the internet, protected by approximately the same level of security that graces a Hotmail account.
  
• Every computer and security terminal in the world has somewhere on it to plug in your PDA, so that you can use it to hack your way in.
  
• If you wrote the encryption algorithm on a security checkpoint, it means that you can get past the checkpoint in seconds, despite the fact that you presumably wrote it specifically in order to keep out nosey individuals such as yourself.
  
• The data networks in movie land can transfer 500TB of data in a few hours. 500TB is an amount of data that you don't normally see, so let me put that into perspective. It is 100,000 times the size of the whole of Wikipedia. The average network cable has a maximum data transfer rate of 100Mb/s. At that speed, which is far higher than that offered by any broadband service available today, it would take considerably more than a year to transfer this much information.
  
• With enough computing power behind you, it is possible to break into any system remotely within about 10 seconds.
  
• The main bad guy in any organisation must always wear a black open-collared shirt and a flesh-coloured headset microphone.

Lines Which, To My Pleasant Surprise, Did Not Appear In Die Hard 4.0

• "You can't leave me, dammit! I LOVE YOU!"
  
• "There's nothing for it, gentlemen. We're going to have to turn off the Internet."
  
• "Don't worry, I know the guy who programmed this - I bet he left a back door into it."
  
• "It looks like you are trying to bring down the government of the United States. Can I help you with that?"

And One Which, Unfortunately, Did:

• "It's not a system. It's a country."