The one winning formula that Die Hard has come up with is casting legendary British actors as German mastermind criminals. It's a strange idea, not one that immediately springs to mind at least, but it works. The Grubers have been McClane's greatest enemies and spawned the greatest Die Hard films as a result. I don't think anything can beat the legendary original, but this is still a thoroughly entertaining action film.
I've heard people criticise it because the plot is too difficult to follow, but it really isn't. It's your average heist affair with a simple twist at the end. Luckily, America's greatest ever cop is there to thwart the proceedings and this time he has an accomplice in the shape of the reluctant Samuel L. Jackson. I have seen this film so many times that it's permanently ingrained into my psyche.
From the fantastic opening shot and the classic introduction of the protagonist right through the city-wide manhunt and culminating in the final showdown, this film is pure entertainment throughout. They just don't make cocky, average super-heroes like this anymore, and that's a real shame!