I'm sure this has been discussed here before I started posting, by anyway... I've been watching video of Julius Jones from his rookie season and last year, and the biggest difference seems to be his ability to make the first guy miss. If you watch 2004 video, Julius was much more... "fluid" in the backfield before hitting the hole. He'd let the play develope and then hit the whole, often making a defender miss before he hit the hold, then bursting through. In 2005, it seems like (even before the injury) he rammed straight to the hole, even before it was opened, which led to many times him simply running into a wall. He was a much more stiff runner than his rookie year, like he was thinking too much rather than relying on instinct. Could this be Parcell's getting into his head? Making him more robotic possibly? One thing that definitely didn't change was his "second gear" extra burst once through the hole, which is fantastic.