one of the perks of having an either outside or inside stopper is by pressing the FSS trigger and the charge button. by doing that you are more likely to draw a charge.
from
http://sports.ign.com/articles/645/645549p1.html
Hold the left trigger and tap B: Take Charge
Step in front of your man and draw the foul. Stand in the wrong area, however, and watch the dribbler pass right on by for an easy bucket.
as for the blocking, in 2005 and 06 current gen, big men can swat layups off the backboards with ease....its a canned animation, there is nothing the offensive player can do to change his situation.
see second mark :26 and :42 in this video
http://media.putfile.com/V1-of-the-new-INtro-Movie
hope that explains it to you a little better
Now the nextgen blocking in 06 and all of the 2k games goes like the jumpshot blocking in currentgen. The offensive player can utilize "Freestyle Air" (thats what EA calls it) by pressing the dunk/layup button again to readjust your shot to avoid the block. This type of blocking is more realistic but with current gen games the players hand doesnt do a good job "finding" the ball
see times 1:24, ,1:37 two in a row, and 2:58
http://media.putfile.com/Celtics-Street-Dynasty-Month-1
or times 1:09, 2:40, 3:53, 4:03 in this video
http://media.putfile.com/Celtics-Street-Dynasty-Month-2