AT THE MOVIES, lonesome nebbish Robert De Niro (right) stalks talk-show kingpin Jerry Lewis in Martin Scorsese’s The King of Comedy. IN MUSIC, the smooth grooves of Patti Austin and James Ingram’s single “Baby, Come to Me” hit No. 1 on the Billboard chart. IN BOOKSTORES, it’s a cosmic thing: James A. Michener’s Space and Arthur C. Clarke’s sci-fi sequel 2010: Odyssey Two orbit the upper reaches of the Publishers Weekly best-seller list. AND IN THE NEWS, the theater world is in mourning a day after playwright Tennessee Williams died at age 71 in New York City.