I think New Zealands Craig McMillan is the most underated finisher getting around at the moment.
He is a master at getting under the yorker length ball and lofting it with power.
Ricky Ponting also can change his game very effectively from being an accumalator to being a power hitter when he is still in at the 40th over. Ricky's biggest advantage is that he can hit a lot of balls that many of the power of axeman miss.