Looking at the first three games, the run blocking really hasn't been much better than last year as far as the five linemen go.
The real difference in the running game has been with the TEs' blocking. Fasano is a huge upgrade over Campbell's last season. Campbell was great at one time but he had physically lost it. Witten also seems to be putting much more effort into blocking. He's been getting after it after an extremely disappointing '05.