This episode is really funny and well performed. I'd not only rank it as one of the best of the season, but of the entire series.
Fonzie is great as he breaks down over the destruction of his beloved motorcycle, and Henry Winkler plays it perfectly.
As always, Marion is one of my favourite characters, as she tries to distract the Fonz with one of Joanie's magic tricks.
But the star of the show is Ralph, who enters Arnold's looking very concerned and suspicious, and we all know from the first second we see him that he was somehow responsible, even if it was an accident.
All-in-all, this is a classic, really funny episode. I'd rank it in my top 10 favourite episodes of the series.