The other day I posted some images of a skeleton that I rigged for posing. Here’s a video of how the posing works.

Here’s how I build a rig and set up the hierarchy in SU (the video Simon posted above shows how I pose) –

Instructions using a car as an example (you can even download the model used in the post):
http://www.giantmonster.tv/giant/?p=110

Examples:
http://www.giantmonster.tv/giant/?p=101
http://www.giantmonster.tv/giant/?p=115
http://www.giantmonster.tv/giant/?p=364

My SU Posing video:
http://www.giantmonster.tv/giant/?p=425