Beat cream cheese until fluffy. Gradually blend in sugar, lemon juice, vanilla and dash of salt. Add 2 eggs, one at a time, beating well after each one. Pour into crust. Bake at 325 degrees for 25-30 minutes, until firm in center.
TOPPING:
Combine sour cream, sugar and vanilla. Spoon over top of pie. Bake 10 minutes longer. Cool. Chill several hours. Garnish with strawberries or blueberries (or both!), if desired.