Originally Posted by someotherguy

There are companies that specialize in supplying cool Japanese computers. E.g
http://www.dynamism.com/index.shtml and (much cheaper) http://conics.net/. They'll also install English-language Windows. I've no personal experience with either. Note that they specialize in laptops, whereas the link you supplied seems to be a desktop (and I'm not sure what's interesting about it).

I've bought small laptops in Akihabara and brought them into the US. There's some minor paperwork to avoid paying Japanese tax, and I've never been charged customs duty in the US.