Drain pears, reserving 1/2 cup syrup. In large mixing bowl, combine reserved pear syrup and 1/2 cup cream; add pudding mix. Using electric mixer, beat on lowest speed until blended, about 2 minutes. Divide mixture evenly among 6 stemmed dessert dishes; Chill until set. Before serving, place one pear half, cut side up, on top of each serving. Pour 2 to 3 teaspoons of liqueur slowly over each serving. Whip remaining cream until soft peaks form; gently beat in sugar. Top each serving with whipped cream and sprinkle with almonds.