Here are notes from Tissa David's lecture of 3/1/1990
Above: animating a bicycle
Swimmer: utilize water
action under water
In a walk never have your character at a 90 degree angle. Your character must lean otherwise he'll look rigid and stiff.
In a dance [illustration]
Animate dance straight ahead. Have character always leaning. Every action is like a string in a bow (the stretching and bending when your foot is stretched that is your hit -accent).
Twisting and leaning will make your dance more dynamic.
You must have music to get your beat. Every fourth or eighth beat your character will dance.
Above: notes on horses and animated backgrounds