Often you need to make broad changes to animation when it's already pretty key-heavy, particularly if you animate for VFX or block in a detailed way to live action reference. My forthcoming tool set 'bh_cycleTools' has some tools I like to use that help me deal with this in a simple and predictable way.
The rig in the video is from Kiel Figgins.
Tags:tools, maya, mel, animation, vfx, keyframes, mocap, reference and samurai