For those of you who have heard of EDICT, the online Japanese-English dictionary, it's gotten better thanks to various native voice actors from Jpod101, and from Jim Breen himself. Everyone involved spent countless hours recording each entry listed in the dictionary. Now in addition to looking up a Japanese word, you can also hear the correction pronunciation.
Read more about it at:
http://blogs.japanesepod101.com/
http://www.csse.monash.edu.au/~jwb/wwwjdicnews.html