Delgado was spot-on in his review.
Die Hard 4 certainly delivers on the action: motorway pile-ups, helicopters going down, F-16 fighters vs trucks, lots of machine guns.
But the problem with Die Hard 4 is that it is a cookie-cutter action movie. You could take Bruce Willis out of the movie, re-name the character, and stick another lead in the role and have the same effect.
I don't know about you guys, but that is what I expect from a Ben Affleck movie. I expect more -- much more -- from a Die Hard movie.
I expect the story to be carried by the fantastic character of John McClane, a guy who is a total burn-out: a heavy drinker, a smoker, with a crude and acerbic tongue, and a broken family to boot. But when the time comes, he answers the call. In THIS Die Hard movie however, McClane is none of those things.
The story is weak, the script is structured around stunt set pieces, no memorable characters, and the suspension of disbelief has been taken to preposterous levels (a villain gets smashed by a car, then gets back up to fight. Really?).
The film just seemed to lack any oomph, any zing...it just had lots of stuff crashing and exploding. Par for the course with many action movies, but you really expect something better from a Die Hard movie. I think it was a massive sell-out. And if ever you needed evidence of that, don't expect to get the famous "Yippee ki yay" line in its entirety.