I have the best one ever, and it doesn't involve raw egg or gelatine, so its safe and veggie:
150g digestive biscuits
75g butter or margarine
200g low fat cream cheese
125 ml whipping or double cream (NOT single cream, the recipe will fail)
50g caster sugar
1 lemon
fruit, etc for decoration
1) Crush biscuits to make crumbs
2) Melt butter or marg over low heat. Remove from heat- stir in biscuit crumbs. Press this mixture into your tin to form a base. Refrigerate.
3) Grate lemon rind and then squeeze out juice.
4) Whip cream until thickened.
5) Stir the cream into the cheese. Fold in lemon rind, juice and sugar.
6) Spread mixture over crumb base.
7) Decorate as required. Refrigerate.
Hope you like it!