That's right, it was on this very day that the first Godzilla was released in Japan. So what better way to celebrate the first Godzilla movie than by watching Godzilla movies? Thankfully, Crackle has a bunch of streaming Godzilla films available online and they're all legit.
If you want more streaming tokusatsu fun (albeit not Godzilla or Toho-related), head on over to Hulu to watch episodes of Johnny Sokko and His Flying Robot and Ultraman Towards The Future (known as Ultraman Great in Japan). But parents should keep in mind that level of violence might be an issue in Johnny Sokko and His Flying Robot and that a character swears in the 5th episode of Ultraman Towards The Future.
Finally, here's a cool Godzilla blog that you should check out.