Animesuki
http://www.animesuki.com/


Animesuki is a great place to start if you know exactly what series you want to download, but it's excellent if you just want to browse for something new. Animesuki lists their information by most recent releases, fansub groups, series, mirrors, and is searchable in case you missed an episode. All of their mirrors are currently up to date and they have a FAQ and a forum. Animesuki makes a point of keeping a Licensed Anime database and an explanation of licensed anime available through their main page.