http://日本語.jp/

It has a list of sites with Japanese domain names (like http://渋谷駅.jp) in case anyone's into that kind of stuff.

Are these real (as in, the kanji are actually a part of the address), or are they alphanumeric domains with Japanese somehow printed in the address bar?

Edit: Just visited one of the links and it seems to point to the latter.

Yeah, last year Wired had an article about ICANN finally letting people use non-Latin character sets in domain names:

Web Addresses Now Can Be All Greek to You, ICANN Rules