This old classic can't be beat. Everyone has seen it so I won't waste time on a regular review. Some details I have picked up over the past few views of it are the subtle humor.
A SWAT guy runs through a thicket of roses and gets poked. He stops in his tracks and says OUCH.
The un-kept Asian bad guy (Al Leong) holds up behind a snack food counter. He can't help himself so he grabs a Crunch Bar.
A drunk guy randomly kisses McClane on the cheek. McClane laughs to himself and says "California." I don't know how many times I also laughed to myself about how Californians act or almost committed hari-kari in the car when watching them drive.
Apart from those small revelations on this viewing the movie is still outstanding.
A further note on the bluray: The DVD is just fine. Sure some of the anamorphic shots look better on bluray, but overall it is not a very good upgrade. Sadly Fox is in the business of spamming out second rate blurays for first rate movies.