Donald is not just, as popular belief would have it, someone who gets mad. He's someone with ungoverned, ungovernable passions, of which anger is just one: hunger, weariness, envy, spite, lust and love are some of the others. The humour comes (in part) from the fact that all along he thinks he's in control. And in fact, the resulting cartoons ARE more controlled. Donald does not break the laws of physics as often or as outrageously as Bugs Bunny does - he cannot pull a stick of dynamite out of nowhere just because it suits the plot - but when he DOES do the impossible, one feels the sheer force of his personality pushing him. It's like watching (and listening to) a jet as it crosses the sound barrier.
This cartoon proves my points as well as any other. It's one of Donald's and Hannah's very best. The 1950s could easily have been their finest decade together, if the economics of production hadn't cut Hannah's Disney career short in 1956. Very likely it WAS their finest decade even so. Even if "The New Neighbor" were the routine Donald outing you'd expect from reading a synopsis of the plot, which it isn't, the strength of Donald's character would be enough to make it funnier and more vibrant than the ritualised gaggery Warner Brothers was churning out at the time. -Except, that is, for the cartoons of Chuck Jones - another director who understood the value of building his humour on a strong foundation of character.