http://www.chessbase.com/ and http://www.chessbase.de

These are simply fantastic: Information, news, tournament reports. it doesn't get much better than this!

http://mywebpages.comcast.net/danheisman/Main_Chess/chess.htm

Homepage of one of the best chess teachers alive, Dan Heisman! Full of instructional material, game annotations etc.

http://www.chesscafe.com/

An amazing internet resource. Teaching, game annotations, historical curiosities, book reviews and much more.

http://www.jeremysilman.com/chess.html

This webpage, by one of the greatest chess authors in the world, has its share of wierd stuff (bit like mine!), but the chess content it is brilliant. Top teaching, great book reviews, and a nice personal and friendly touch that Jeremy brings to all his stuff.

http://www.chesscenter.com/twic/twic.html

THE webpage for chess tournament results and for downloading recent (top quality) games

http://chessexchange.com

I have a soft spot for this page. It is a great place for friendly chess discussion. Post your games, annotate others, discuss whatever you want. Highly recommended