More than 1000 friends and admirers of playwright Wendy Wasserstein attended a memorial for her. “The memorial, which was also broadcast via closed circuit to an audience assembled nearby at the Juilliard School, drew scores of Broadway’s biggest stars and backstage players, many of whom counted Ms. Wasserstein — whose social calendar might include everything from nights at the opera to days at the mall — as an old, and close, friend.”