Animenation -  http://www.animenation.com/ - A very good site for everything anime : )

Toonami coalition - http://www.animeadrenaline.com/coalition.shtml

The united sites of anime - http://www.db-unlimited.net/doi/

Convention of Anime Gaming RolePlaying Comics and more - http://www.connecticon.org/index.php?module=htmlpages&func=display&pid=56

Adequate Anime - http://www.adequate.com/anime/

Aloha Anime - http://www.alohaanime.com/

Anime Depot - http://www.animedepot.com/animedepot.html

Anime News Network - http://www.animenewsnetwork.com/

Anime Turnpike - http://www.anipike.com/

Anime Comics - http://www.animecomics.com/

Anime Play Magazine - http://www.animeplay-mag.com/

Akibaotaku - http://www.akibaotaku.com/

Sakura Media - http://www.sakuramedia.com/

The Anime Corner Store - http://www.animecornerstore.com/

Tokyo Kid - http://www.tokyokid.com/ -My favorite (retail only) store.

Next Day Anime - http://www.nextdayanime.com/ - A very good site (online store).