SLP98012401 - 23 JANUARY 1998- ST. LOUIS,MISSOURI, USA: Movie producer Steven Spielberg (left) leaves the Federal Courthouse in a Lincoln Towncar, after testifying in a copyright case involving the movie, "Twister," January 23. Local filmaker Stephen Kessler claims Spielberg and screenwriter Michael Crichton, copied his screenplay, "Catch The Wind," to make "Twister." UPI BG/Bill Greenblatt