I like the first one, the second one is corny but sort of lovable in its own dumb corny way, but I have SUCH a soft spot for the third one. I think because I remember seeing it in theaters, and I was so taken with the juxtaposition of time travel and technology with the old west (which I later learned was called steampunk), but mostly? Um. The romance between Doc Brown and Clara. I was a weird kid, okay!