An excellent (and affordable) app to use for animation is Apple's Motion. In this article Iain Anderson runs through a number of useful tips on animating Motion's parameter behaviors.
Drawing lines and shapes in Apple Motion is fun and easy. What about animating those lines? Ben Balser demonstrates some tricks and techniques that can be used on more complex shapes too.
We've all seen them: lines, in different colors, shapes & sizes, shooting across a map to show the journey taken on a travel program. Ben Balser shows the A to B of map line creation in Motion.