Dave's ESL Cafe   Very nice all-purpose site.

Self-Study Guide with Audio

Great Listening Quizzes with RealAudio

Interesting Things for ESL Students

Vocabulary Quizzes

Interactive Vocabulary Quizzes for ESL Students

Self Study Quizzes for ESL Students

A Great Online Magazine for ESL Students

Time To Read - Activities to get students of all ages involved in reading along with interesting reading material.

News for kids - and resources for teachers (From CNN)

Teaching Tools from Discovery.com - Quizmakers, vocabulary helpers, etc.

Online Book Report Help - Walks students through the steps needed to create a book report on a computer.

Translation Dictionary