heh, dvds arnt for copying style in CG its more for workflow and technique.

If you follow a tutorial and simply copy what the teacher does it can be pointless but you may learn somthing quicker than someone who is guess work, and then appy what you did in the dvd tutorial and apply it to your own work.

For examples with Nurbs modelling and rigging its not the easiest thing to learn on your own and DVDs and videos offer a fast way to learn the principles.