Animation Cafe: A place to talk about classical animation, 3D animation, stop motion, life drawing, layout and storyboarding in terms of problems, critique or suggestions.
Animation Journal E-Group: Free e-mail list "for individuals who are conducting scholarly research in the areas of animation history and theory".
Animation Nation: In-depth essays on the animation industry. Also includes message board and archives.
AWN Discussion Forums: Hosted by Animation World Network for fans and professionals alike to discuss anything and everything having to do with animation.
Toon.Com: Cartoon and animation forums: general discussion, animated films, trivia, collectibles and marketplace.
Voices in Animation: Discussion continuum hosted by Animation Artist Magazine: Anime, Films, 3D, Video Games, "How To" as well as a general animation forum.