Marg Helgenberger, star of the hit show "C.S.I.," and her husband, Alan Rosenberg, who is on the hit show "The Guardian," celebrated their 13th wedding anniversary in S.F. over the weekend by staying in the Alistair Cooke Suite at the Huntington. ... They were married in that very room 13 years ago. They met in New York while both were appearing in the soap "Ryan's Hope." They had dinner at Boulevard on Friday night. "They are charming people," says Boulevard's Lori Glumac. "Mr. Rosenberg is very funny. He and Christine Baranski were the only reason to watch 'Cybill.'"