At this point, I think he’d be crazy not to run. 1) Nothing he will ever do in the Senate will live up to his current buzz; 2) his celebrity will probably be a declining asset over time–best to try to cash it in now; 3) unless you embarass yourself, running for president usually becomes a credential for running again sometime in the future, and it may increase Obama’s desirability as a VP candidate this time; 4) you never know–he just might win the nomination. So let me join those saying, “run Barack, run.”