I got the japanese rom just to see how it is, and I can't wait for that fan translation to be finished (
www.mother3.org ) because it looks awesome. It's got pretty cool music and the same kind of graphics and sounds that you'd expect. I don't wanna go through it not understanding anything but the odd english word, so I'm gonna wait for the translation, which is almost done.
Still though, download it if you wanna see what it's like.