I remember reading in the 70's that Mr. Moonlight was the least favorite Beatles' song, but I kind of dig it. Lennon had a great vocal on it, and it just has such a weird sound to it.
I like 1965 Beatles' music. I know they were probably a bit burnt, but the songs on HELP, to me, were cool. I guess I agree that BEATLES FOR SALE caught them a little worn out, but I dig the heavy rockabilly influence (especially in George's playing).