Playwright Neil Simon, a master of comedy whose laugh-filled hits such as "The Odd Couple," ''Barefoot in the Park" and his "Brighton Beach" trilogy dominated Broadway for decades, has died. He was 91. Simon died early Sunday of complications from pneumonia surrounded by family at New York Presbyterian Hospital in Manhattan, said Bill Evans, his longtime friend and the Shubert Organization director of media relations. In the second half of the 20th century, Simon was the American theater's most successful and prolific playwrights, often chronicling middle class issues and fears.