Andrew Martinez, the South Bay man who gained national notoriety as the ``Naked Guy'' when he insisted on walking around nude in Berkeley in the early 1990s, has died, the apparent victim of suicide. Martinez, 33, died early Thursday after he was discovered unconscious in his cell at the Santa Clara County main jail. He was found lying under the covers on his cell bunk, with a plastic bag tied around his head, said jail spokesman Mark Cursi. He was pronounced dead about an hour later at Valley Medical Center. Martinez, who had been in custody since Jan. 10, was...