It would have to be Back to the Future. I’ve lost count of how many times I’ve rewatched those movies. I also just saw the broadway musical version of it as well. If I had to choose between the three, then it would have to be the second one. There is so much iconic imagery from those movies, and I loved getting to see parts of the first from from different POVs. It has a great mix of many things that people can enjoy.
I have to say, it took me a few mins to mentally get over the fact that these characters I’ve watched so many times before were now singing. Once I got over that, it was a blast for me.