Animation Nation II
The Big Cartoon Database is a wonderful animation resource, combining news about upcoming cartoon and animated film features with episode guides for more than 4,000 cartoons. The cartoons are organized by studio, so if you're a fan of Rankin-Bass, you can quickly find relevant listings. The Cartoon of the Moment isn't that interesting currently, but if you click on the year, you can get a directory of every cartoon produced during that time -- extremely useful for chronology buffs.

Thanks to Blogdex.