Sounds fun, right? Actually did this video a while back, but been so busy with work that I forgot to post it here. . .
This is a video about how I "reuse" joint chains in a rig. The basic starter example is using copies of the same joint chain for an IK/FK arm. From there I show how to use a version of that chain in a stretchy rig and finally show how that concept applies to a rig I did for Method for a fish character that incorporates an autoswim function with FK control.
Maya/Rigging: Using multiple copies of joint chains from zeth willie on Vimeo.