David Rosenblatt

CEO, DoubleClick

David rose through the ranks at DoubleClick, and was once head of the technology division, overseeing the email and database marketing that ultimately accounted for 50% of DoubleClick's revenue.

David was made one of two co-presidents of the company after the buyout by Hellman & Friedman in 2005, and had ascended to CEO by the time Google outbid AOL, Yahoo and Microsoft to grab DoubleClick for $3.1 billion last spring. Now, along with the rest of his employees and Wall Street, David is waiting for regulators to finally clear the merger. In the meantime, business continues to soar.