Dependent Parameters are a lot of fun to use as well.
You can use a Body Part or Prop Motion to control another Figure's Body Parts or a prop.

The motion on the other figureprop doesn't have to be the same as the control.
I just did a quick one in which I used Andy's Left Hand Up & Down to control Alyson's Head Twisting Left and Right.
I could have add more motions as well.

I could also use DP to control multiple segments of a tail etc.
For instance bending segment 1 (control) using DP could also bend Segments 2 through 10.

"That government is best which governs the least, because its people discipline themselves."
Thomas Jefferson