Political theorist Benjamin Barber, actor Warren Beatty, columnist Maureen Dowd, rock critic Greil Marcus, and San Francisco Mayor Gavin Newsom are among the speakers at this year's graduation ceremonies at the University of California, Berkeley. The Class of 2005 selected Barber as the keynote speaker for Commencement Convocation, to be held at 4 p.m. on Wednesday at the Greek Theatre. He is a Professor of Civil Society at the University of Maryland and founder of The Democracy Collaborative, a nonprofit think tank. Barber, who has lectured frequently at UC-Berkeley over the years, said he plans to address the role of...