6 阿凡达 episodes (no downloading required) 

Y'know, nick.com. 6 episodes: The Library, 苦 Work, The Chase, Zuko Alone, The Blind Bandit, 阿凡达 日
密码: 阿凡达, avatar:the last airbender, book 2, 阿凡达 the last airbender, episodes, aang, katara, zuko