In addition to adding a link for Peter Emslie on the right, I've added some other new links.
Will Finn is an animator, story artist and director of features. Besides his own work, his blog is printing a lot of great artwork by the little known Henry Syverson, whose work is simple, though incredibly lively. Recent posts also include work by Walt Kelly, another personal favourite, and a letter by Ward Kimball that I've already linked to.
Scott Kirsner's Cinematech blog is essential reading for anyone with an interest in the changing media landscape. Kirsner is independent-friendly, so he's constantly spotlighting new sites and approaches that offer opportunities for individual film makers.
Many people who write about computer animation get hung up on technique. They're so involved in explaining how an effect is accomplished, they don't stop to consider the value of what's on the screen. Keith Lango loves the nitty gritty tech discussions, but never loses sight of larger issues like content and acting. He's worked at a variety of studios and with a variety of budgets, so he's got a wider ranging viewpoint than many in the industry. I consider him one of the most perceptive writers among animation professionals.