Chinese4fun.com

Online sample lessons for learning Chinese, geared toward kids. Part of a larger fee based online course teaching Chinese and Mandarin characters in an interactive format.
http://www.chinese4fun.com/

Chinese Learning Club

Free online Chinese classes include language (reading and writing), tradition and folk dance, Chinese knotting, Tai-Chi Chuan and Tai-Chi sword.
http://www.ezlearnchinese.com/1stclass.html

Write Chinese

A demo Java applet that teaches Chinese calligraphy for 75 common characters in both traditional and simplified form.
http://tomyee3.home.comcast.net/WriteChinese.htm

Free Chinese Lessons

Introduction to Mandarin, with sections on pronunciation, reading and writing.
http://www.freechineselessons.com/

Chinese Multimedia Tutorial

Short tutorials for learning and speaking Chinese.
http://otal.umd.edu/chintut/