Does TCM ever show any of the Godzillas or Gameras?
They've shown a few Godzilla movies from time to time, as well as Mothra and Rodan. There was a time a few years ago when they showed the original Gojira and those two uncut and in Japanese, and that started me off on my quest to watch the whole Godzilla canon, as chronicled on my blog.
I don't think they show any Gamera films, though, although ShoutFactoryTV has all the Showa-era Gamera films available for streaming, in Japanese with subtitles. (They used to have the superb Gamera trilogy from the '90s, but they seem to have dropped it.)