1Heat oven to 350ºF. In small bowl, mix cracker crumbs and 1 tablespoon sugar. Stir in butter. Press evenly in bottom of 8x2-inch springform pan. Bake 9 to 11 minutes or until set. Cool completely.
2Meanwhile, in 1 1/2-quart saucepan, mix 1 cup sugar and the cornstarch. Stir in water, lemon juice and egg yolks. Cook over medium heat, stirring constantly, until mixture thickens and boils. Boil 1 minute; remove from heat. Reserve 1/2 cup lemon mixture. Stir cream cheese and lemon peel into remaining 1 1/2 cups lemon mixture until smooth. Press plastic wrap on surfaces of each mixture (this helps prevent a "skin" forming on top). Refrigerate about 30 minutes or until cool.
3In chilled small bowl, beat whipping cream with electric mixer on high speed until soft peaks form. Fold whipped cream into cream cheese mixture; pour over baked layer. Drop reserved lemon mixture by tablespoonfuls onto cheesecake. Cut through dollops of lemon mixture, using knife, to form swirls.
4Refrigerate at least 24 hours or until set. Run metal spatula along side of cheesecake to loosen; remove side of pan. Refrigerate any remaining cheesecake.