Copying Actions

Is there a method in which the NLA Actions can be copied from one rig to another without scripting a custom script for it?

I have an artist animating in Maya & Poser on a common rig. I can import these animations into Blender individually, but I want them as actions on the one rig for purposes of use in a game (i.e. turn the individually imported animations into “run”, “jump”, “walk”, etc).

Actions can be transfered between objects just by selecting the object and choosing the action you want in the Action Editor.

By copying frames perhaps…