I think my most frequently rewatched show and movie are Star Trek: DS9 and The Lord of the Rings trilogy respectively. I just recently rewatched the extended edition of the trilogy with my four-year old. She had a good time with my Anduril replica mimicking Aragorn fighting the orcs, but somehow she didn't quite cotton on to the point of the quest. She was quite distressed when the ring died in Mt. Doom.