Inspired by Pacific Rim, I compiled a selection of my five favorite kaiju/Japanese monster films for The Horn. Out of curiosity, I researched the streaming availability of the films mentioned. I referenced Netflix, Amazon Prime, Crackle, Hulu, Hulu Plus, and the Internet Archive. As a service to the Geek Curmudgeon faithful, I present my findings.
5. Mothra vs Godzilla (1964)
Not available
4. Ghidorah, the Three-Headed Monster (1964)
3. Frankenstein versus Subterranean Monster Baragon (1965)
Not available
2. Gamera (1965)
Not available
1. Godzilla (1954)
And as a bonus, I checked on all the other movies I mention in the article.
Godzilla vs the Smog Monster
Not available (Be thankful for that)
Mothra (1961)
Not available
Gammera the Invincible
Internet Archive (in widescreen!)
Godzilla, King of the Monsters
Saddened by the meager findings of some of the better films. Thankfully, all are available on DVD.
This streaming info is accurate as of 7/24/13. As with most things online, streaming availability is always in flux.
***YMMV***
(I, also, reviewed Pacific Rim for The Horn.)