12 basic principles of animation:

By the time Robin Hood was released, only four of the Nine Old Men were still animating at Disney. They were Milt Kahl, John Lounsbery, Frank Thomas and Ollie Johnston, although Eric Larson was still working for Disney as a talent scout and trainer, and Wolfgang Reitherman was by that point directing and producing films. Lounsbery died in 1976, Kahl retired the same year and died in 1987. Thomas and Johnston retired in 1978, and both later enjoyed cameos in the Brad Bird-directed films The Iron Giant (Warner Bros., 1999) and The Incredibles (Pixar, 2004). Thomas died shortly afterwards in 2004, and Johnston (who was by that point the last surviving "Old Man") died in 2008.
The Nine Old Men also refined the 12 basic principles of animation:

1. Squash and stretch
2. Anticipation
3. Staging
4. Straight Ahead Action and Pose to Pose
5. Follow Through and Overlapping Action
6. Slow In and Slow Out
7. Arcs
8. Secondary Action
9. Timing
10. Exaggeration
11. Solid Drawing
12. Appeal

http://en.wikipedia.org/wiki/Disney%27s_Nine_Old_Men