I just wanted to drop a quick word about a few websites that I'm adding to my sidebar because of their downright usefulness.
Animationmeat, ThinkingAnimation, and Don Bluths Animation Academy all have really, really wonderful pdf's (except the Bluth one, copy-paste, folks) on just so many topics regarding the more technical aspects of animation. The Nine Old Men series featured on both Thinking Animation and AnimationMeat is one of those gold mines you don't want to miss!
They've even got a great pdf on Planning and Timing your animation by Glen Keane- not that I have the seven essentials taped to my desk, or anything *ahem*
Also- DON GRAHAM NOTES! His Action Analysis classes were a huge factor behind Disney's characters becoming more solid, more believable in weight and volume.
I might be a little bit on the late train in posting these up, I usually am the last one to realize what great resources are available, but better late than never!!!
Feel free to send any more interesting finds to me, I'm always looking for more of these great tidbits!