21. Joe Tucci, CEO, EMC
Joe Tucci is the acquisition king. No one in this business has done a better job at picking the best and brightest technology products and pulling them together to create a storage, virtualization and cloud computing power. The latest pieces Tucci has added to the puzzle including Data Domain, a deduplication software maker that EMC wrestled away from NetApp in a bidding war and FastScale Technology, a software provider with technology aimed at increasing the performance and scalability of cloud infrastructures.