Godzilla is firmly established as a hero in this movie. it's also one of the more gruesome and just plain weird Godzilla movies out there. it was also the second Godzilla movie I ever saw, as recounted here. I still love it.
it's also 40 years old today. it's pretty amazing to me that it's been that long. granted, that's the Japanese version, as the US one wasn't released until April of 72 here, and then almost right away to TV. I know what I'll be watching today!