The two local guys that I know which are exceptional TTers both have the same riding style: They climb hills sitting down and generally roll in big gears when everyone else is spinning away. They also tend to sprint more like Julian Dean and Fabian Cancellara (i.e., ``power'' riders) and less like most of the traditional thrash-and-mash sprinters.
Speaking of exceptional TTers, I'm number one in my zip code. I'm surprised the USCF site tracks such a worthless fact like that.