Keith Lango on weight

Keith Lango has a post about offsetting vs just posing more (which is funny because he already has a whole tutorial about it, and in a way, he was a big contributer to the whole overlapping thing back in the early days of CG) Anyway, some interesting gems about weight

Drag during the move is where the weight comes from. Simply overlapping parts at the end of the move is not enough- it's a cheap trick that doesn't solve the problem.

The key to good weight in a move is to get a sense of drag during the move. This is done not by some math trick but by making the changing shapes work as the character moves.