Japanese Dictionary – Online
There are several pretty good Japanese dictionary sites, each with their own pros and cons. The better ones we’ve found are:
Denshi Jisho – Japanese/English and English/Japanese. Word and Kanji lookup.
Tangorin – Has a more free interface with a single place to input text. It works out what you’re looking for.
WWWJDIC – Arguably more complicated, and less good on presentation, but the absolute wealth of information stored is incredible. Example sentences, voice recordings, the works.