Candlelight Stories Story Theatre - many stories ranging from ~3 to 30 minutes e.g. "The First Voyage of Sinbad"  You'll need Windows Media Player for this site.

Listening and reading passages - including vocabulary comprehension quizzes.

An interesting example of an interactive online form used for
teaching/testing listening and writing comprehension

An unusual "listening" crossword puzzle" - students listen and discriminate minimal pairs to complete a crossword puzzle

Model* Listening puzzles  - students listen to a passage for clues to help them complete a chart

Over 30 online reading and / or listening texts - most are complemented by pictures & pronunciation exercises

Randall's ESL Cyber Listening Lab - excellent resources.

Takako's great adventure -10 episode story with supporting worksheets for each episode.

TESL Journal. - A very very comprehensive list of links to online listening activities

Another comprehensive list of links to online listening activities
provided by the Internet TESL Journal

The English Listening Lounge - highly rated.

The Listening Business:  listening exercises based on BBC Radio Programmes

University of Illinois' online resources - Interactive Listening Comprehension Practice

ESL Lessons - a limited number of ESL focussed lesson plans and handouts targeted on reading

Writing Den - while labeled a writing den, it focuses more on reading skills.

Eslflow.com - Speaking section:- ideas for "surveys", "roleplays", brainstorming, etc.

ESL Lessons - ESL focussed lesson plans and handouts

Over 300 approaches designed to make "Book Reports" interesting for
students.

Outta Ray's Head Writing Lessons -  over 30 different writing assignments & a module based approach to
writing.

Paradigm Online Writing Assistant - more appropriate for advanced English classes