These are the best chess links I have found from around the net.

Internet Chess Club : This is the best place to play chess against another human in real time online.
US Chess Federation : The main governing body for tournament chess in the United States
Colorado State Chess Association : Only because I live in Colorado.
InternetChess.com : A big site, this is the index page. Also with a mirror site.
Computer Chess Magazine : The looks like the personal page of the editor. Links to program ratings.
La Mecca - Chess Encyclopedia : Online chess opening encyclopedia.
Chess Links and Endgame Of The Day : That pretty much says it.
House of Staunton : Perhaps THE leader in high quality chess boards and sets.
World Chess Championship Index : Scores and PGN files for all of the world championships both human & computer.