Originally Posted by Pasta:
“Maybe there's something wrong with me, but I've always found Falstaff thoroughly unpleasant and cheered (not literally) when he was disowned. in both parts of Henry IV he basically rounds people up to be literal cannon fodder without a hint of a qualm. The great Charles Laughton, in many ways an obvious candidate to play Falstaff, always refused because he disliked the character so much. 'I had to throw too meny men like him out of my father's hotel', he said once.”
I have to say I've found him a more humorous character reading the plays than watching them. I think it's because in reading you have the luxury of being able to take time to read the puns and wordplay he uses, whereas that's sometimes a bit lost on delivery by actors. I certainly thought Beale rather rushed through some of Falstaff's best lines.
He is still quite unpleasant in many respects and I think that makes him one of Shakespeare's greatest characters. How do we, as the audience, square our affection we have for this jolly, rotund scoundrel with the fact that he is a liar and a coward, a man who makes a mockery of the word honour, a man who has none and so chooses to ridicule it, to ask what honour there is in death and dismemberment on the battlefield.
This is an absolutely pivotal moment, though, because it's the first occasion that Hal has to act the part, to be a man of bravery and honour on the battlefield instead of playing the fool in Falstaff's court.
The whole dramatic thrust of the Henry IV plays is the responsibility of being King. Henry says about how heavy the crown lies upon his head. Like other troubled Shakespeare characters he finds sleep eluding him (often a sign of guilt, as with Macbeth, and with Henry IV as usurper of the crown). He despairs at his wayward son, who will soon (as Henry is ill) inherit the kingdom. He would not want the next king of England to be weak and fickle like the very man Henry stole the crown from in the first place.
And Shakespeare, of course, wrote and performed the plays at a time when there had been great uncertainty about who would rule England, with Elizabeth having no direct heir and battles raging between whether the inheritors of the throne should be protestant or catholic and questions about legitimacy of inheritance.
Falstaff, then, represents all that Hal must reject in order to be a strong and fit king for his country - a man of honour, of truth, one who takes his role seriously and does not make jokes, who is not idle or feckless or profligate, who is brave and not cowardly.
It is only by setting up Falstaff as the (ahem) fall guy that in witnessing his rejection that we understand that Hal is a fit and rightful king.