Bug 1021751 contains a custom Bounce Animator that chains several AccelerateInterpolators. I'd like to explore OvershootInterpolator/AnticipateOvershootInterpolator and see if they fit what we want. The BounceAnimator was the result of a lot of back-and-forth with :antlam about the feel of a bounce animation, to allow finer-grained control over each leg of the bounce, as well as the number of bounces for future use.

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