Benigni, Shakespeare clean up at Oscar.

Shakespeare in Love may have won the best picture award. Steven Spielberg may have won for best director. But it was Roberto Benigni who enlivened Sunday night_s Academy Awards (R) presentations, standing in triumph atop the seat backs at the Dorothy Chandler Pavilion in Los Angeles when his film, Life is Beautiful, won for best foreign-language film. Benigni launched into a rambling, virtually incomprehensible, yet utterly charming, acceptance speech when he was named best actor -- the first man ever to receive that award for a foreign-language film. He thanked the Oscar(R) crowd for their "hailstorm of kindness of gratitude" and his parents for giving him the greatest gift of all -- "poverty…