One of the best in the whole show. It's a perfect mix of a funny story and situation comedy. The main characters not involved in the main lot shows up but not only to be there but to create another gag. Paul stays calm through the hole thing just to be humiliated at the end. And Helen Hunt shows the range of her acting changing between happy and furious beeing sarcastic and neurotic it a lot of fun. Not to forget the play: "The Pirates of Penzance" performed by a cast of 65+ amateur actors. We only hear Paul father perform the song of the Major-General in his very own way. First during practise and at the end during the performance where he adds his personal version because he forgot the original lines.
All in all a nearly perfect episode having all we love this show for.