Mine would have to be the 1970's anime version of The Little Mermaid. I remember watching it as a kid at my grandparents' on VHS. I was very disappointed when my grandma gave it away a few years ago and have since been trying to find it on DVD. It's not a very well-known version, and with how many versions there are out there it was hard to find the exact one, but I eventually found it on Amazon in October/November for about $7.
So, very awesome for me, but probably not so impressive for anyone else. 😂