On the other hand, OS X comes with a terrible Japanese IME. The Google one that's available on OS X and Windows makes things better but until that came out Windows was just unquestionably way better for Japanese text input.
It's hard to notice until you're really using it a lot, but it has a hard time with stuff like people's names that Windows does better with. I might be getting a little carried away saying it's "terrible" but I was a student in Japan for a while and the limitations became obvious and annoying to me under those circumstances.
