Omar Sharif, the Egyptian-born actor who soared to international stardom in two David Lean epics, "Lawrence of Arabia" and "Doctor Zhivago," has died. He was 83.Sharif's longtime agent, Steve Kenis, told The Associated Press that Sharif died of a heart attack in a Cairo hospital. Sharif had been suffering from Alzheimers."Lawrence of Arabia" earned Sharif a supporting-actor Oscar nomination and international stardom. Sharif also appeared in the films "Funny Girl," ''Che!" and "The Pink Panther Strikes Again."