tons. lots are just news websites, but i also keep a lot of individual artist's blogs bookmarked too.
here's some news ones:
http://www.cartoonbrew.com --#1 the best.
http://www.theanimationblog.com --#2 the best.
http://www.jimhillmedia.com --(this one's mostly gossip, but sometimes you find a good tip here and there, and floyd norman posts stuff occasionally too)
http://animationpodcast.com/ --wheee! podcast interviews! lately they've been posting interviews with james baxter. :)
***ALSO, rest in peace Ollie Johnson. the end of an era, and the world will never be the same. *cries*