The Mysterians. Hands down. The movie's look, feel, designs and sets inspired so many future science fiction within and outside of Japan it might as well be credited for as much as Godzilla '54.
Plus it's a very colorful, very sleek, sci-fi actioner with just enough character blimishes to keep me giving a damn. 1960s toku as we remember it, super sentai, anime, and design elements from Star Trek, Lost in Space and even Star Wars wouldn't have been what they are without The Mysterians. Incredible, imaginative sci-fi. The late Fred Wilcox and Honda were clearly on the same page during this time period.
And of course in 1965 the ideas and designs from The Mysterians were flung together with Godzilla and, presto! We have one of the most beloved Showa era Godzilla films: Monster Zero.
"'Nostalgic' does not equal 'good,' and 'standards' does not equal 'elitism.'" "Being offended is inevitable. Living offended is your choice."