Leonard Nimoy, world famous to "Star Trek" fans through a beloved cult TV series and a half-dozen films as the pointy-eared, purely logical science officer Mr. Spock, has died.Nimoy's son, Adam, says the actor died Friday morning in Los Angeles of end-stage chronic obstructive pulmonary disease. He was 83.Although Nimoy followed his 1966-69 "Star Trek" run with a notable career as both an actor and director, in the public's mind he would always be Spock.His half-human, half-Vulcan character was the calm counterpoint to William Shatner's often-emotional Captain Kirk on one of television and film's most revered cult series.