I know Bakshi’s version has A LOT of issues, but I grew up watching it again and again and I have very fond memories of it. I’m aware I am in the minority.
One of the scenes I love is Boromir’s death (video link)… if you can ignore the “not-enough-budget” Uruk-hai. I like the roughness and lack of music once Boromir’s is hit with the first arrow.
Source of the image: The Lord of the Rings (1978) – Mutant Reviewers
I completely agree with you on the spirit of the book thing. I watched it when it first came out and I was blown away by it. I didn’t care about the inaccuracies because the studio did such a good job of capturing the magic of the story.
Oddly enough, the Jackson version had just enough changes in order to make it cinematic that I didn’t really like it the first time through. I’ve come around on that one and can now enjoy it, but for a while it was like the uncanny valley they talk about in robotics.