I have watched the movies so many times it might be embarrassing. Perhaps not the WHOLE series the same, but the beginning ones have at least been in the double digits. Every Christmas there's a broadcasting channel that does like 31 days of Christmas or something and for SOME REASON Harry Potter was categorized as Christmas movies. So every year I would watch the HP movies on tv. Harry Potter is also one of the few things my mother in law and I have in common, so whenever we are together we generally resort to putting the films on because we don't know what to talk about.
I've also already tried about 3x with my kiddos to get them interested in the films but... No dice yet but that just means more attempts lol.
Each of these instances though add up to a looot of rewatches, though I love the films so much I see no issue with this.
I definitely need to get into more re-reads though!