Recently, I rewatched Kenneth Brannagh's masterful production of Hamlet. It is possibly his best work on screen. The film came out when I was in college, and I remember eagerly awaiting its arrival in the video stores (remember those?) I went to a small college in the middle of nowhere, and had to wait on the small local video store to get it before renting, but I promptly declared I had a hot date with Shakespeare and settled in on a Friday night to watch it. All four hours.
Most productions of Hamlet cut some of the subplots to bring it to a more standard 2 hours, but Brannagh chose to make an uncut version, weaving together all the complex story lines. (I took several days to watch it, since these days I rarely have four hours to sit in front of a screen uninterrupted).

First was what an excellent cast Brannagh assembled--the top Shakespearean actors of the time (it is a kind of a Who's Who of that set) plus a high quality listing of American actors like Charlton Heston, Billy Crystal, and Robin Williams. Simon Russell Beale has a small role as one of the grave diggers (I almost didn't recognize him!) and John Gielgud has a role as Priam--I believe it was one of Gielgud's last screen roles, although his portrayal of the Pope in Elizabeth may have been the very last. The two films were released close together, so I couldn't say exactly. Brian Blessed, a long time collaborator of Brannagh's, plays the dead king to perfection, and Derick Jacobi's Claudius is oily and inspired.
Hamlet is, at its heart, a play about grief. It is about a son grieving his father, about a wife grieving a husband and making poor choices about her future life from the depths of that grief by marrying her brother-in-law.
(The movie Ophelia makes the bold claim that Gertrude's choice to
marry Claudius came from a desperate desire to maintain her youth and
sexual desirability. I'm not sure what I think of this, but it
certainly could be true. A perimenopausal woman watching her vigorous
son and Ophelia together may well have felt the forgotten woman. On the
other hand, you have to feel for Ophelia, who was madly in love with Hamlet, had given herself to him in anticipation of a marriage to come, but instead is driven to madness by Hamlet's poor
treatment of her. One wonders if he had just let her in on what was going on, perhaps she would have gone along with the deception. I found myself increasingly frustrated on her behalf, and wanted to yell at Hamlet to just tell her already).
I heard someone say once that it was too bad that Gertrude and Hamlet couldn't have just sat down for a heart-to-heart and shared their grief over the king's death, as the whole tragedy of what follows could possibly have been avoided. But then we wouldn't have a play to discuss and use as a mirror for ourselves. Hamlet's famous "To be or not to be" speech is about a man in deep pain; a pain so deep he contemplates the end of his existence. By the end of the speech, Hamlet recovers himself, and decides that yes, he does want to live, but his life will be one of revenge for his dead father.

There was a line that struck me between the eyes, so to speak, in Act 2, Scene II. In it, Hamlet meets his university friends, Rosenkrantz and Guildenstern, whom Claudius has sent for in the hopes that they will rouse Hamlet from his melancholy madness. Hamlet's madness is written in such a way that it can be played a deliberate deception or as genuine insanity; Brannagh chooses the former, clearly using the guise of madness as a cover for his real plans to uncover the poisoning of the old king by Claudius.
Toward the end of the scene, a group of players arrive at the palace to put on a play for the court. Hamlet is delighted to see them, and sees that he can use them for his own ends. That is, he will direct them to put on a play that exposes Claudius' perfidy to the entire court in the guise of a story about Troy. Hamlet is giving his instructions to the lead player, and Lord Polonius (Ophelia's father) is increasingly concerned about Hamlet's state of mind, particularly given Hamlet's previous attachment to his daughter.
Hamlet and the lead player have been exchanging words about the play, and the lead actor (played by Charlton Heston), assures Hamlet that he is well aware of the classical references Hamlet seeks. Polonius is unsure of the subtext of the verbal parrying between the two men and keeps interjecting his own commentary. Hamlet rudely tells Polonius where to put it, but then this exchange caught my ear:

LORD POLONIUS
My lord, I will use them according to their desert.
HAMLET
God's bodykins, man, much better: use every man
after his desert, and who should 'scape whipping?
Use them after your own honour and dignity: the less
they deserve, the more merit is in your bounty.
Take them in.
Given Hamlet's underlying desire for vengeance over the old king's untimely death, it is an interesting thing to say: that everyone under the sun is deserving of death and destruction, but that we should not use people thusly. We should rather treat people as we would be treated, with honor and dignity. It is, I think, the moment that Hamlet reveals his hand: that his madness is an affect, that he desires justice for his father, and a redress of the wrongs done.
Unfortunately, Hamlet's machinations take on a life of their own, and in the scandal and intrigue that follow, the Danish court is too distracted by the unfolding drama to notice that their old enemy Fortinbras, at the head of the Norwegian army, has breached their borders and overrun the palace, finding the king, queen, Hamlet, and Laertes dead, Polonius and Ophelia having met their untimely ends earlier in the play.
It is a tragedy of the highest order, and so very human.