This ... will be a "dramatically different" NSC from that of the Bush administration or any of its predecessors since the forum was established after World War II to advise the president on diplomatic and military matters, according to national security adviser James L. Jones, who described the changes in an interview. "The world that we live in has changed so dramatically in this decade that organizations that were created to meet a certain set of criteria no longer are terribly useful," he said.
The toughest energy security challenges facing DOD and the nation will only be solved with strong leadership and swift promulgation of plans and policies to all subordinate departments. So far, the Obama/Jones-built NSC looks like a formula for success. There's more detail here from the Washington Post; you'll want to read this.