Here are some useful links related to Japan. Enjoy.

Japanese Culture

Japan Society

Language Studies

Kanji Game
Kanji Challenge
Java game of hiragana and katakana
Japanese Slang
World Slang Database
The Japanese Slang Jisho
The Japanese Writing Tutor
The Kanji by Grade
Yes Japan

Academic Resources

Journal of Japanese Studies
The Kojiki online
Mechademia
The Historical Science Society of Japan
Japan Focus
Old Photos of Japan

Anime and Manga Related

Anime and Myth
Sakura-con
Bost TV
Anime News Network
The Right Stuf