I don't think there is an official discussion thread on this yet, so I thought I'd start one.
The official site for the US production: http://www.brooklynthemusical.com/
There's even a free song download of the song "Heart Behind These Hands", which is a pretty catchy song.
In the new tour cast, Diana DeGarmo (2nd place on the 3rd season of American Idol) played Brooklyn (which is what Ban-chan's character will be)
There are also many other "Brooklyn" songs to download on Limewire. Just type in "brooklyn the musical", and some songs should come up. I'll be putting up the songs I have in the EMH soon.
I think this musical is pretty popular.. at least it is amoung the Midwest US show choirs. I was looking on showchoir.com and some choir is doing a song from "Brooklyn". I think it's kinda cool.. I hope that group's gonna be at one of the competitions my group is going to.
Anyway, if you have any info on the Ban-chan production, or you just wanna chat about how bad you want to see the musical (haha), then here's the place to do it. =]