Excellent ESL Websites

My favorites:
Successful English
http://successfulenglish.com/
Practical suggestions about learning English
ESL Podcast
http://www.eslpod.com/website/index_new.html 
podcast on extensive topics and great explanation


American English Pronunciation
http://www.pronuncian.com/
Podcast, minimal pairs, and pronunciation lessons
English Central
http://www.englishcentral.com/
Practice English while watching videos, provide feedback!
VOA American History
http://www.manythings.org/voa/history/
Collection of VOA American History series.

Others:
Connect With English Videos
http://www.learner.org/resources/series71.html
Get extra practice watching the Connect with English video series here
Activities for ESL Students
http://a4esl.org
Play games, take quizzes, read grammar, and practice vocabulary
Dave's ESL Cafe
http://www.eslcafe.com
Easy to use, lots of activities, including games, quizzes, pronunciation practice, and stories
Karin's ESL Partyland
http://www.eslpartyland.com
Lots of great ESL activities
About.com ESL Guide
http://esl.about.com/homework/esl/
Quizzes and tests for different levels; employment opportunities for nonnative speakers
ESLAmerica.US
http://www.eslamerica.us/
An English language website to practice conversation, vocabulary, grammar, reading, and more AND all of it has sound so you can listen while you practice
English Page
http://www.englishpage.com/
For all skills, lots of activities, exchange messages with other students, and ask questions
Randall's ESL Cyber Listening Lab
http://www.esl-lab.com
Excellent listening practice
Purdue University's Online Writing Lab
http://owl.english.purdue.edu/
A great place to learn more about writing and grammar